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Thread: no such device: error from boot but Nautilus sees it OK

  1. #1
    Join Date
    Jun 2008
    Location
    here & there
    Beans
    282
    Distro
    Xubuntu 14.04 Trusty Tahr

    no such device: error from boot but Nautilus sees it OK

    I have an external usb disc which contains some operating systems and user data. Having tried various methods from this forum and google followed by update-grub etc. the boot menu shows the os details but gives the following error messages when selected:

    Natty
    Code:
    error: no such device: 5bca1844-fdc0-4a0d-8d26-1dd231a42d55.
    error: hd1,msdos1 cannot get C/H/S values.
    error: you need to load the kernel first.
    
    Press any key to continue ...
    Maverick
    Code:
    error: no such device: 0b3e4853-09d2-49de-93ec-4ae00b35662f.
    error: hd1,msdos6 cannot get C/H/S values.
    error: you need to load the kernel first.
    
    Press any key to continue ...
    The disc is mounted when logged in to the internal disc Maverick and I can access the files for read and write from there.

    Here is the latest RESULTS.txt

    Code:
                    Boot Info Script 0.55    dated February 15th, 2010                    
    
    ============================= Boot Info Summary: ==============================
    
     => Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in 
        partition #2 for (,msdos2)/boot/grub.
     => Grub 2 is installed in the MBR of /dev/sdb and looks on the same drive in 
        partition #6 for (,msdos6)/boot/grub.
    
    sda1: _________________________________________________________________________
    
        File system:       vfat
        Boot sector type:  Windows XP: Fat32
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  Windows XP
        Boot files/dirs:   /boot.ini /ntldr /NTDETECT.COM
    
    sda2: _________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info:  
        Operating System:  Ubuntu 10.10
        Boot files/dirs:   /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
    
    sda3: _________________________________________________________________________
    
        File system:       vfat
        Boot sector type:  Unknown
        Boot sector info:  According to the info in the boot sector, sda3 has 0 
                           sectors.
        Operating System:  Windows 98
        Boot files/dirs:   /IO.SYS /MSDOS.SYS /COMMAND.COM
    
    sda4: _________________________________________________________________________
    
        File system:       Extended Partition
        Boot sector type:  Unknown
        Boot sector info:  
    
    sda5: _________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info:  
        Operating System:  
        Boot files/dirs:   
    
    sdb1: _________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info:  
        Operating System:  Ubuntu natty (development 
                           branch)
        Boot files/dirs:   /boot/grub/menu.lst /boot/grub/grub.cfg /etc/fstab 
                           /boot/grub/core.img
    
    sdb2: _________________________________________________________________________
    
        File system:       Extended Partition
        Boot sector type:  -
        Boot sector info:  
    
    sdb5: _________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info:  
        Operating System:  
        Boot files/dirs:   
    
    sdb6: _________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info:  
        Operating System:  Ubuntu 10.10
        Boot files/dirs:   /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
    
    sdb7: _________________________________________________________________________
    
        File system:       swap
        Boot sector type:  -
        Boot sector info:  
    
    =========================== Drive/Partition Info: =============================
    
    Drive: sda ___________________ _____________________________________________________
    
    Disk /dev/sda: 30.0 GB, 30005821440 bytes
    255 heads, 63 sectors/track, 3648 cylinders, total 58605120 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    
    Partition  Boot         Start           End          Size  Id System
    
    /dev/sda1    *             63    38,106,179    38,106,117   c W95 FAT32 (LBA)
    /dev/sda2          38,106,180    48,822,976    10,716,797  83 Linux
    /dev/sda3          58,589,055    58,605,119        16,065  1e Hidden W95 FAT16 (LBA)
    /dev/sda4          48,824,318    58,587,135     9,762,818   5 Extended
    /dev/sda5          48,824,320    58,587,135     9,762,816  83 Linux
    
    
    Drive: sdb ___________________ _____________________________________________________
    
    Disk /dev/sdb: 320.1 GB, 320072933376 bytes
    255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    
    Partition  Boot         Start           End          Size  Id System
    
    /dev/sdb1    *             63    20,964,824    20,964,762  83 Linux
    /dev/sdb2         195,454,975   625,141,759   429,686,785   5 Extended
    /dev/sdb5         195,454,976   432,534,683   237,079,708  83 Linux
    /dev/sdb6         432,535,552   617,218,047   184,682,496  83 Linux
    /dev/sdb7         617,220,096   625,141,759     7,921,664  82 Linux swap / Solaris
    
    
    blkid -c /dev/null: ____________________________________________________________
    
    Device           UUID                                   TYPE       LABEL                         
    
    /dev/sda1        2629-16F0                              vfat       ACER                          
    /dev/sda2        a552c2f1-288d-4f1b-ac4f-eb649d161b43   ext4                                     
    /dev/sda3        3D4D-16F1                              vfat       ACER_SERVIC                   
    /dev/sda4: PTTYPE="dos" 
    /dev/sda5        53e3a404-913e-4485-a890-19518ae190e8   ext4                                     
    /dev/sda: PTTYPE="dos" 
    /dev/sdb1        5bca1844-fdc0-4a0d-8d26-1dd231a42d55   ext4       XMD1                          
    /dev/sdb2: PTTYPE="dos" 
    /dev/sdb5        b3b4c609-ac22-43d5-a131-5623827f6cf4   ext4                                     
    /dev/sdb6        0b3e4853-09d2-49de-93ec-4ae00b356b2f   ext4                                     
    /dev/sdb7        03a25ca9-4ac6-4a76-a7a0-bc7210aa7ff3   swap                                     
    /dev/sdb: PTTYPE="dos" 
    
    ============================ "mount | grep ^/dev  output: ===========================
    
    Device           Mount_Point              Type       Options
    
    /dev/sda2        /                        ext4       (rw,errors=remount-ro,commit=0)
    /dev/sda5        /home                    ext4       (rw,commit=0)
    /dev/sdb6        /media/0b3e4853-09d2-49de-93ec-4ae00b356b2f ext4       (rw,nosuid,nodev,uhelper=udisks)
    /dev/sdb1        /media/XMD1              ext4       (rw,nosuid,nodev,uhelper=udisks)
    /dev/sdb5        /media/b3b4c609-ac22-43d5-a131-5623827f6cf4 ext4       (rw,nosuid,nodev,uhelper=udisks)
    
    
    ================================ sda1/boot.ini: ================================
    
    [boot loader] 
    timeout=5 
    default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS 
    [operating systems] 
    multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Home Edition" /fastdetect /NoExecute=OptIn 
    
    =========================== sda2/boot/grub/grub.cfg: ===========================
    
    #
    # DO NOT EDIT THIS FILE
    #
    # It is automatically generated by grub-mkconfig using templates
    # from /etc/grub.d and settings from /etc/default/grub
    #
    
    ### BEGIN /etc/grub.d/00_header ###
    if [ -s $prefix/grubenv ]; then
      set have_grubenv=true
      load_env
    fi
    set default="0"
    if [ "${prev_saved_entry}" ]; then
      set saved_entry="${prev_saved_entry}"
      save_env saved_entry
      set prev_saved_entry=
      save_env prev_saved_entry
      set boot_once=true
    fi
    
    function savedefault {
      if [ -z "${boot_once}" ]; then
        saved_entry="${chosen}"
        save_env saved_entry
      fi
    }
    
    function recordfail {
      set recordfail=1
      if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
    }
    
    function load_video {
      insmod vbe
      insmod vga
    }
    
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos2)'
    search --no-floppy --fs-uuid --set a552c2f1-288d-4f1b-ac4f-eb649d161b43
    if loadfont /usr/share/grub/unicode.pf2 ; then
      set gfxmode=640x480
      load_video
      insmod gfxterm
    fi
    terminal_output gfxterm
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos2)'
    search --no-floppy --fs-uuid --set a552c2f1-288d-4f1b-ac4f-eb649d161b43
    set locale_dir=($root)/boot/grub/locale
    set lang=en
    insmod gettext
    if [ "${recordfail}" = 1 ]; then
      set timeout=-1
    else
      set timeout=10
    fi
    ### END /etc/grub.d/00_header ###
    
    ### BEGIN /etc/grub.d/05_debian_theme ###
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    ### END /etc/grub.d/05_debian_theme ###
    
    ### BEGIN /etc/grub.d/10_linux ###
    menuentry 'Ubuntu, with Linux 2.6.35-24-generic' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos2)'
        search --no-floppy --fs-uuid --set a552c2f1-288d-4f1b-ac4f-eb649d161b43
        linux    /boot/vmlinuz-2.6.35-24-generic root=UUID=a552c2f1-288d-4f1b-ac4f-eb649d161b43 ro  splash  quiet splash
        initrd    /boot/initrd.img-2.6.35-24-generic
    }
    menuentry 'Ubuntu, with Linux 2.6.35-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos2)'
        search --no-floppy --fs-uuid --set a552c2f1-288d-4f1b-ac4f-eb649d161b43
        echo    'Loading Linux 2.6.35-24-generic ...'
        linux    /boot/vmlinuz-2.6.35-24-generic root=UUID=a552c2f1-288d-4f1b-ac4f-eb649d161b43 ro single  splash
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-2.6.35-24-generic
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_linux_xen ###
    ### END /etc/grub.d/20_linux_xen ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos2)'
        search --no-floppy --fs-uuid --set a552c2f1-288d-4f1b-ac4f-eb649d161b43
        linux16    /boot/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos2)'
        search --no-floppy --fs-uuid --set a552c2f1-288d-4f1b-ac4f-eb649d161b43
        linux16    /boot/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    menuentry "Microsoft Windows XP Home Edition (on /dev/sda1)" {
        insmod part_msdos
        insmod fat
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 2629-16f0
        drivemap -s (hd0) ${root}
        chainloader +1
    }
    ### END /etc/grub.d/30_os-prober ###
    
    ### BEGIN /etc/grub.d/40_custom ###
    # This file provides an easy way to add custom menu entries.  Simply type the
    # menu entries you want to add after this comment.  Be careful not to change
    # the 'exec tail' line above.
    ### END /etc/grub.d/40_custom ###
    
    ### BEGIN /etc/grub.d/41_custom ###
    if [ -f  $prefix/custom.cfg ]; then
      source $prefix/custom.cfg;
    fi
    ### END /etc/grub.d/41_custom ###
    
    =============================== sda2/etc/fstab: ===============================
    
    # /etc/fstab: static file system information.
    #
    # Use 'blkid -o value -s UUID' to print the universally unique identifier
    # for a device; this may be used with UUID= as a more robust way to name
    # devices that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    nodev,noexec,nosuid 0       0
    # / was on /dev/sda2 during installation
    UUID=a552c2f1-288d-4f1b-ac4f-eb649d161b43 /               ext4    errors=remount-ro 0       1
    # /home was on /dev/sda5 during installation
    UUID=53e3a404-913e-4485-a890-19518ae190e8 /home           ext4    defaults        0       2
    
    =================== sda2: Location of files loaded by Grub: ===================
    
    
      22.2GB: boot/grub/core.img
      21.2GB: boot/grub/grub.cfg
      23.1GB: boot/initrd.img-2.6.35-24-generic
      23.1GB: boot/vmlinuz-2.6.35-24-generic
      23.1GB: initrd.img
      23.1GB: vmlinuz
    
    =========================== sdb1/boot/grub/menu.lst: ===========================
    
    # menu.lst - See: grub(8), info grub, update-grub(8)
    #            grub-install(8), grub-floppy(8),
    #            grub-md5-crypt, /usr/share/doc/grub
    #            and /usr/share/doc/grub-legacy-doc/.
    
    ## default num
    # Set the default entry to the entry number NUM. Numbering starts from 0, and
    # the entry number 0 is the default if the command is not used.
    #
    # You can specify 'saved' instead of a number. In this case, the default entry
    # is the entry saved with the command 'savedefault'.
    # WARNING: If you are using dmraid do not use 'savedefault' or your
    # array will desync and will not let you boot your system.
    default        0
    
    ## timeout sec
    # Set a timeout, in SEC seconds, before automatically booting the default entry
    # (normally the first entry defined).
    timeout        3
    
    ## hiddenmenu
    # Hides the menu by default (press ESC to see the menu)
    hiddenmenu
    
    # Pretty colours
    #color cyan/blue white/blue
    
    ## password ['--md5'] passwd
    # If used in the first section of a menu file, disable all interactive editing
    # control (menu entry editor and command-line)  and entries protected by the
    # command 'lock'
    # e.g. password topsecret
    #      password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
    # password topsecret
    
    #
    # examples
    #
    # title        Windows 95/98/NT/2000
    # root        (hd0,0)
    # makeactive
    # chainloader    +1
    #
    # title        Linux
    # root        (hd0,1)
    # kernel    /vmlinuz root=/dev/hda2 ro
    #
    
    #
    # Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
    
    ### BEGIN AUTOMAGIC KERNELS LIST
    ## lines between the AUTOMAGIC KERNELS LIST markers will be modified
    ## by the debian update-grub script except for the default options below
    
    ## DO NOT UNCOMMENT THEM, Just edit them to your needs
    
    ## ## Start Default Options ##
    ## default kernel options
    ## default kernel options for automagic boot options
    ## If you want special options for specific kernels use kopt_x_y_z
    ## where x.y.z is kernel version. Minor versions can be omitted.
    ## e.g. kopt=root=/dev/hda1 ro
    ##      kopt_2_6_8=root=/dev/hdc1 ro
    ##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
    # kopt=root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro
    
    ## default grub root device
    ## e.g. groot=(hd0,0)
    # groot=5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    
    ## should update-grub create alternative automagic boot options
    ## e.g. alternative=true
    ##      alternative=false
    # alternative=true
    
    ## should update-grub lock alternative automagic boot options
    ## e.g. lockalternative=true
    ##      lockalternative=false
    # lockalternative=false
    
    ## additional options to use with the default boot option, but not with the
    ## alternatives
    ## e.g. defoptions=vga=791 resume=/dev/hda5
    # defoptions=quiet splash
    
    ## should update-grub lock old automagic boot options
    ## e.g. lockold=false
    ##      lockold=true
    # lockold=false
    
    ## Xen hypervisor options to use with the default Xen boot option
    # xenhopt=
    
    ## Xen Linux kernel options to use with the default Xen boot option
    # xenkopt=console=tty0
    
    ## altoption boot targets option
    ## multiple altoptions lines are allowed
    ## e.g. altoptions=(extra menu suffix) extra boot options
    ##      altoptions=(recovery) single
    # altoptions=(recovery mode) single
    
    ## controls how many kernels should be put into the menu.lst
    ## only counts the first occurence of a kernel, not the
    ## alternative kernel options
    ## e.g. howmany=all
    ##      howmany=7
    # howmany=all
    
    ## specify if running in Xen domU or have grub detect automatically
    ## update-grub will ignore non-xen kernels when running in domU and vice versa
    ## e.g. indomU=detect
    ##      indomU=true
    ##      indomU=false
    # indomU=detect
    
    ## should update-grub create memtest86 boot option
    ## e.g. memtest86=true
    ##      memtest86=false
    # memtest86=true
    
    ## should update-grub adjust the value of the default booted system
    ## can be true or false
    # updatedefaultentry=false
    
    ## should update-grub add savedefault to the default options
    ## can be true or false
    # savedefault=false
    
    ## ## End Default Options ##
    
    title        Ubuntu natty (development branch), kernel 2.6.36-1-generic-pae
    uuid        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/vmlinuz-2.6.36-1-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro quiet splash 
    initrd        /boot/initrd.img-2.6.36-1-generic-pae
    
    title        Ubuntu natty (development branch), kernel 2.6.36-1-generic-pae (recovery mode)
    uuid        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/vmlinuz-2.6.36-1-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro  single
    initrd        /boot/initrd.img-2.6.36-1-generic-pae
    
    title        Ubuntu natty (development branch), kernel 2.6.35-22-generic-pae
    uuid        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/vmlinuz-2.6.35-22-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro quiet splash 
    initrd        /boot/initrd.img-2.6.35-22-generic-pae
    
    title        Ubuntu natty (development branch), kernel 2.6.35-22-generic-pae (recovery mode)
    uuid        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/vmlinuz-2.6.35-22-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro  single
    initrd        /boot/initrd.img-2.6.35-22-generic-pae
    
    title        Ubuntu natty (development branch), kernel 2.6.32-24-generic-pae
    uuid        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/vmlinuz-2.6.32-24-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro quiet splash 
    initrd        /boot/initrd.img-2.6.32-24-generic-pae
    
    title        Ubuntu natty (development branch), kernel 2.6.32-24-generic-pae (recovery mode)
    uuid        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/vmlinuz-2.6.32-24-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro  single
    initrd        /boot/initrd.img-2.6.32-24-generic-pae
    
    title        Chainload into GRUB 2
    root        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/grub/core.img
    
    title        Ubuntu natty (development branch), memtest86+
    uuid        5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    kernel        /boot/memtest86+.bin
    
    ### END DEBIAN AUTOMAGIC KERNELS LIST
    
    =========================== sdb1/boot/grub/grub.cfg: ===========================
    
    #
    # DO NOT EDIT THIS FILE
    #
    # It is automatically generated by /usr/sbin/grub-mkconfig using templates
    # from /etc/grub.d and settings from /etc/default/grub
    #
    
    ### BEGIN /etc/grub.d/00_header ###
    if [ -s $prefix/grubenv ]; then
      load_env
    fi
    set default="0"
    if [ ${prev_saved_entry} ]; then
      set saved_entry=${prev_saved_entry}
      save_env saved_entry
      set prev_saved_entry=
      save_env prev_saved_entry
      set boot_once=true
    fi
    
    function savedefault {
      if [ -z ${boot_once} ]; then
        saved_entry=${chosen}
        save_env saved_entry
      fi
    }
    
    function recordfail {
      set recordfail=1
      if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi
    }
    insmod ext2
    set root='(hd1,1)'
    search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    if loadfont /usr/share/grub/unicode.pf2 ; then
      set gfxmode=640x480
      insmod gfxterm
      insmod vbe
      if terminal_output gfxterm ; then true ; else
        # For backward compatibility with versions of terminal.mod that don't
        # understand terminal_output
        terminal gfxterm
      fi
    fi
    insmod ext2
    set root='(hd1,1)'
    search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
    set locale_dir=($root)/boot/grub/locale
    set lang=en
    insmod gettext
    if [ ${recordfail} = 1 ]; then
      set timeout=-1
    else
      set timeout=10
    fi
    ### END /etc/grub.d/00_header ###
    
    ### BEGIN /etc/grub.d/05_debian_theme ###
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    ### END /etc/grub.d/05_debian_theme ###
    
    ### BEGIN /etc/grub.d/10_linux ###
    menuentry 'Ubuntu, with Linux 2.6.32-24-generic-pae' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod ext2
        set root='(hd1,1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux    /boot/vmlinuz-2.6.32-24-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro   quiet splash
        initrd    /boot/initrd.img-2.6.32-24-generic-pae
    }
    menuentry 'Ubuntu, with Linux 2.6.32-24-generic-pae (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod ext2
        set root='(hd1,1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        echo    'Loading Linux 2.6.32-24-generic-pae ...'
        linux    /boot/vmlinuz-2.6.32-24-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro single 
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-2.6.32-24-generic-pae
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
        insmod ext2
        set root='(hd1,1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux16    /boot/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
        insmod ext2
        set root='(hd1,1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux16    /boot/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    menuentry "Windows 7 (loader) (on /dev/sda1)" {
        insmod ntfs
        set root='(hd0,1)'
        search --no-floppy --fs-uuid --set b61ca5f21ca5ae35
        chainloader +1
    }
    menuentry "Windows Vista (loader) (on /dev/sda2)" {
        insmod ntfs
        set root='(hd0,2)'
        search --no-floppy --fs-uuid --set 2a7214917214643b
        chainloader +1
    }
    menuentry "Ubuntu, with Linux 2.6.32-24-generic (on /dev/sda5)" {
        insmod ext2
        set root='(hd0,5)'
        search --no-floppy --fs-uuid --set bdbbbedb-fce4-4f79-8b7e-ad8769991b36
        linux /boot/vmlinuz-2.6.32-24-generic root=UUID=bdbbbedb-fce4-4f79-8b7e-ad8769991b36 ro quiet splash
        initrd /boot/initrd.img-2.6.32-24-generic
    }
    menuentry "Ubuntu, with Linux 2.6.32-24-generic (recovery mode) (on /dev/sda5)" {
        insmod ext2
        set root='(hd0,5)'
        search --no-floppy --fs-uuid --set bdbbbedb-fce4-4f79-8b7e-ad8769991b36
        linux /boot/vmlinuz-2.6.32-24-generic root=UUID=bdbbbedb-fce4-4f79-8b7e-ad8769991b36 ro single
        initrd /boot/initrd.img-2.6.32-24-generic
    }
    menuentry "Ubuntu, with Linux 2.6.32-17-generic (on /dev/sda5)" {
        insmod ext2
        set root='(hd0,5)'
        search --no-floppy --fs-uuid --set bdbbbedb-fce4-4f79-8b7e-ad8769991b36
        linux /boot/vmlinuz-2.6.32-17-generic root=UUID=bdbbbedb-fce4-4f79-8b7e-ad8769991b36 ro quiet splash
        initrd /boot/initrd.img-2.6.32-17-generic
    }
    menuentry "Ubuntu, with Linux 2.6.32-17-generic (recovery mode) (on /dev/sda5)" {
        insmod ext2
        set root='(hd0,5)'
        search --no-floppy --fs-uuid --set bdbbbedb-fce4-4f79-8b7e-ad8769991b36
        linux /boot/vmlinuz-2.6.32-17-generic root=UUID=bdbbbedb-fce4-4f79-8b7e-ad8769991b36 ro single
        initrd /boot/initrd.img-2.6.32-17-generic
    }
    ### END /etc/grub.d/30_os-prober ###
    
    ### BEGIN /etc/grub.d/40_custom ###
    # This file provides an easy way to add custom menu entries.  Simply type the
    # menu entries you want to add after this comment.  Be careful not to change
    # the 'exec tail' line above.
    ### END /etc/grub.d/40_custom ###
    
    =============================== sdb1/etc/fstab: ===============================
    
    # /etc/fstab: static file system information.
    #
    # Use 'blkid -o value -s UUID' to print the universally unique identifier
    # for a device; this may be used with UUID= as a more robust way to name
    # devices that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    defaults        0       0
    # / was on /dev/sdb1 during installation
    UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 /               ext4    errors=remount-ro 0       1
    # /home was on /dev/sdb5 during installation
    UUID=b3b4c609-ac22-43d5-a131-5623827f6cf4 /home           ext4    defaults        0       2
    # swap was on /dev/sda7 during installation
    UUID=bb5ab24b-17ad-44c5-9951-62a1a5338559 none            swap    sw              0       0
    # swap was on /dev/sdb3 during installation
    UUID=08e90eee-2b02-456c-8305-e218893ca439 none            swap    sw              0       0
    
    =================== sdb1: Location of files loaded by Grub: ===================
    
    
       2.2GB: boot/grub/core.img
       9.2GB: boot/grub/grub.cfg
       9.3GB: boot/grub/menu.lst
       1.4GB: boot/initrd.img-2.6.32-24-generic-pae
       2.5GB: boot/initrd.img-2.6.35-22-generic-pae
       1.5GB: boot/initrd.img-2.6.36-1-generic-pae
       2.4GB: boot/vmlinuz-2.6.32-24-generic-pae
       2.8GB: boot/vmlinuz-2.6.35-22-generic-pae
       2.9GB: boot/vmlinuz-2.6.36-1-generic-pae
       1.5GB: initrd.img
       2.5GB: initrd.img.old
       2.9GB: vmlinuz
       2.8GB: vmlinuz.old
    
    =========================== sdb6/boot/grub/grub.cfg: ===========================
    
    #
    # DO NOT EDIT THIS FILE
    #
    # It is automatically generated by grub-mkconfig using templates
    # from /etc/grub.d and settings from /etc/default/grub
    #
    
    ### BEGIN /etc/grub.d/00_header ###
    if [ -s $prefix/grubenv ]; then
      set have_grubenv=true
      load_env
    fi
    set default="0"
    if [ "${prev_saved_entry}" ]; then
      set saved_entry="${prev_saved_entry}"
      save_env saved_entry
      set prev_saved_entry=
      save_env prev_saved_entry
      set boot_once=true
    fi
    
    function savedefault {
      if [ -z "${boot_once}" ]; then
        saved_entry="${chosen}"
        save_env saved_entry
      fi
    }
    
    function recordfail {
      set recordfail=1
      if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
    }
    
    function load_video {
      insmod vbe
      insmod vga
    }
    
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos6)'
    search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
    if loadfont /usr/share/grub/unicode.pf2 ; then
      set gfxmode=640x480
      load_video
      insmod gfxterm
    fi
    terminal_output gfxterm
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos6)'
    search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
    set locale_dir=($root)/boot/grub/locale
    set lang=en
    insmod gettext
    if [ "${recordfail}" = 1 ]; then
      set timeout=-1
    else
      set timeout=10
    fi
    ### END /etc/grub.d/00_header ###
    
    ### BEGIN /etc/grub.d/05_debian_theme ###
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    ### END /etc/grub.d/05_debian_theme ###
    
    ### BEGIN /etc/grub.d/10_linux ###
    menuentry 'Ubuntu, with Linux 2.6.35-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
        linux    /boot/vmlinuz-2.6.35-23-generic root=UUID=0b3e4853-09d2-49de-93ec-4ae00b356b2f ro   quiet splash
        initrd    /boot/initrd.img-2.6.35-23-generic
    }
    menuentry 'Ubuntu, with Linux 2.6.35-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
        echo    'Loading Linux 2.6.35-23-generic ...'
        linux    /boot/vmlinuz-2.6.35-23-generic root=UUID=0b3e4853-09d2-49de-93ec-4ae00b356b2f ro single 
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-2.6.35-23-generic
    }
    menuentry 'Ubuntu, with Linux 2.6.32-26-generic' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
        linux    /boot/vmlinuz-2.6.32-26-generic root=UUID=0b3e4853-09d2-49de-93ec-4ae00b356b2f ro   quiet splash
        initrd    /boot/initrd.img-2.6.32-26-generic
    }
    menuentry 'Ubuntu, with Linux 2.6.32-26-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
        echo    'Loading Linux 2.6.32-26-generic ...'
        linux    /boot/vmlinuz-2.6.32-26-generic root=UUID=0b3e4853-09d2-49de-93ec-4ae00b356b2f ro single 
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-2.6.32-26-generic
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_linux_xen ###
    ### END /etc/grub.d/20_linux_xen ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
        linux16    /boot/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set 0b3e4853-09d2-49de-93ec-4ae00b356b2f
        linux16    /boot/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    menuentry "Ubuntu natty (development branch), kernel 2.6.36-1-generic-pae (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/vmlinuz-2.6.36-1-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro quiet splash
        initrd /boot/initrd.img-2.6.36-1-generic-pae
    }
    menuentry "Ubuntu natty (development branch), kernel 2.6.36-1-generic-pae (recovery mode) (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/vmlinuz-2.6.36-1-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro single
        initrd /boot/initrd.img-2.6.36-1-generic-pae
    }
    menuentry "Ubuntu natty (development branch), kernel 2.6.35-22-generic-pae (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/vmlinuz-2.6.35-22-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro quiet splash
        initrd /boot/initrd.img-2.6.35-22-generic-pae
    }
    menuentry "Ubuntu natty (development branch), kernel 2.6.35-22-generic-pae (recovery mode) (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/vmlinuz-2.6.35-22-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro single
        initrd /boot/initrd.img-2.6.35-22-generic-pae
    }
    menuentry "Ubuntu natty (development branch), kernel 2.6.32-24-generic-pae (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/vmlinuz-2.6.32-24-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro quiet splash
        initrd /boot/initrd.img-2.6.32-24-generic-pae
    }
    menuentry "Ubuntu natty (development branch), kernel 2.6.32-24-generic-pae (recovery mode) (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/vmlinuz-2.6.32-24-generic-pae root=UUID=5bca1844-fdc0-4a0d-8d26-1dd231a42d55 ro single
        initrd /boot/initrd.img-2.6.32-24-generic-pae
    }
    menuentry "Chainload into GRUB 2 (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/grub/core.img 
    }
    menuentry "Ubuntu natty (development branch), memtest86+ (on /dev/sda1)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 5bca1844-fdc0-4a0d-8d26-1dd231a42d55
        linux /boot/memtest86+.bin 
    }
    ### END /etc/grub.d/30_os-prober ###
    
    ### BEGIN /etc/grub.d/40_custom ###
    # This file provides an easy way to add custom menu entries.  Simply type the
    # menu entries you want to add after this comment.  Be careful not to change
    # the 'exec tail' line above.
    ### END /etc/grub.d/40_custom ###
    
    ### BEGIN /etc/grub.d/41_custom ###
    if [ -f  $prefix/custom.cfg ]; then
      source $prefix/custom.cfg;
    fi
    ### END /etc/grub.d/41_custom ###
    
    =============================== sdb6/etc/fstab: ===============================
    
    # /etc/fstab: static file system information.
    #
    # Use 'blkid -o value -s UUID' to print the universally unique identifier
    # for a device; this may be used with UUID= as a more robust way to name
    # devices that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    nodev,noexec,nosuid 0       0
    # / was on /dev/sda6 during installation
    UUID=0b3e4853-09d2-49de-93ec-4ae00b356b2f /               ext4    errors=remount-ro 0       1
    # swap was on /dev/sda7 during installation
    UUID=03a25ca9-4ac6-4a76-a7a0-bc7210aa7ff3 none            swap    sw              0       0
    
    =================== sdb6: Location of files loaded by Grub: ===================
    
    
     262.4GB: boot/grub/core.img
     284.5GB: boot/grub/grub.cfg
     222.7GB: boot/initrd.img-2.6.32-26-generic
     222.9GB: boot/initrd.img-2.6.35-23-generic
     262.4GB: boot/vmlinuz-2.6.32-26-generic
     262.5GB: boot/vmlinuz-2.6.35-23-generic
     222.9GB: initrd.img
     222.7GB: initrd.img.old
     262.5GB: vmlinuz
     262.4GB: vmlinuz.old
    =========================== Unknown MBRs/Boot Sectors/etc =======================
    
    Unknown BootLoader  on sda3
    
    00000000  eb 3c 90 4d 53 57 49 4e  34 2e 31 00 02 02 01 00  |.<.MSWIN4.1.....|
    00000010  02 00 02 c1 3e f8 20 00  3f 00 ff 00 7f ff 7d 03  |....>. .?.....}.|
    00000020  00 00 00 00 80 00 29 f1  16 4d 3d 41 43 45 52 5f  |......)..M=ACER_|
    00000030  53 45 52 56 49 43 46 41  54 31 36 20 20 20 33 c9  |SERVICFAT16   3.|
    00000040  8e d1 bc fc 7b 16 07 bd  78 00 c5 76 00 1e 56 16  |....{...x..v..V.|
    00000050  55 bf 22 05 89 7e 00 89  4e 02 b1 0b fc f3 a4 06  |U."..~..N.......|
    00000060  1f bd 00 7c c6 45 fe 0f  38 4e 24 7d 20 8b c1 99  |...|.E..8N$} ...|
    00000070  e8 7e 01 83 eb 3a 66 a1  1c 7c 66 3b 07 8a 57 fc  |.~...:f..|f;..W.|
    00000080  75 06 80 ca 02 88 56 02  80 c3 10 73 ed 33 c9 fe  |u.....V....s.3..|
    00000090  06 d8 7d 8a 46 10 98 f7  66 16 03 46 1c 13 56 1e  |..}.F...f..F..V.|
    000000a0  03 46 0e 13 d1 8b 76 11  60 89 46 fc 89 56 fe b8  |.F....v.`.F..V..|
    000000b0  20 00 f7 e6 8b 5e 0b 03  c3 48 f7 f3 01 46 fc 11  | ....^...H...F..|
    000000c0  4e fe 61 bf 00 07 e8 28  01 72 3e 38 2d 74 17 60  |N.a....(.r>8-t.`|
    000000d0  b1 0b be d8 7d f3 a6 61  74 3d 4e 74 09 83 c7 20  |....}..at=Nt... |
    000000e0  3b fb 72 e7 eb dd fe 0e  d8 7d 7b a7 be 7f 7d ac  |;.r......}{...}.|
    000000f0  98 03 f0 ac 98 40 74 0c  48 74 13 b4 0e bb 07 00  |.....@t.Ht......|
    00000100  cd 10 eb ef be 82 7d eb  e6 be 80 7d eb e1 cd 16  |......}....}....|
    00000110  5e 1f 66 8f 04 cd 19 be  81 7d 8b 7d 1a 8d 45 fe  |^.f......}.}..E.|
    00000120  8a 4e 0d f7 e1 03 46 fc  13 56 fe b1 04 e8 c2 00  |.N....F..V......|
    00000130  72 d7 ea 00 02 70 00 52  50 06 53 6a 01 6a 10 91  |r....p.RP.Sj.j..|
    00000140  8b 46 18 a2 26 05 96 92  33 d2 f7 f6 91 f7 f6 42  |.F..&...3......B|
    00000150  87 ca f7 76 1a 8a f2 8a  e8 c0 cc 02 0a cc b8 01  |...v............|
    00000160  02 80 7e 02 0e 75 04 b4  42 8b f4 8a 56 24 cd 13  |..~..u..B...V$..|
    00000170  61 61 72 0a 40 75 01 42  03 5e 0b 49 75 77 c3 03  |aar.@u.B.^.Iuw..|
    00000180  18 01 27 0d 0a 49 6e 76  61 6c 69 64 20 73 79 73  |..'..Invalid sys|
    00000190  74 65 6d 20 64 69 73 6b  ff 0d 0a 44 69 73 6b 20  |tem disk...Disk |
    000001a0  49 2f 4f 20 65 72 72 6f  72 ff 0d 0a 52 65 70 6c  |I/O error...Repl|
    000001b0  61 63 65 20 74 68 65 20  64 69 73 6b 2c 20 61 6e  |ace the disk, an|
    000001c0  64 20 74 68 65 6e 20 70  72 65 73 73 20 61 6e 79  |d then press any|
    000001d0  20 6b 65 79 0d 0a 00 00  49 4f 20 20 20 20 20 20  | key....IO      |
    000001e0  53 59 53 4d 53 44 4f 53  20 20 20 53 59 53 7f 01  |SYSMSDOS   SYS..|
    000001f0  00 41 bb 00 07 60 66 6a  00 e9 3b ff 00 00 55 aa  |.A...`fj..;...U.|
    00000200
    
    Unknown BootLoader  on sda4
    
    00000000  0a 3c 55 38 43 46 42 3e  0a 3c 55 38 44 37 34 3e  |.<U8CFB>.<U8D74>|
    00000010  0a 3c 55 38 44 42 41 3e  0a 3c 55 39 30 45 38 3e  |.<U8DBA>.<U90E8>|
    00000020  0a 3c 55 39 31 44 43 3e  0a 3c 55 39 36 31 43 3e  |.<U91DC>.<U961C>|
    00000030  0a 3c 55 39 36 34 34 3e  0a 3c 55 39 39 44 39 3e  |.<U9644>.<U99D9>|
    00000040  0a 3c 55 39 43 45 37 3e  0a 3c 55 35 33 31 37 3e  |.<U9CE7>.<U5317>|
    00000050  0a 3c 55 35 32 30 36 3e  0a 3c 55 35 34 32 39 3e  |.<U5206>.<U5429>|
    00000060  0a 3c 55 35 36 37 34 3e  0a 3c 55 35 38 42 33 3e  |.<U5674>.<U58B3>|
    00000070  0a 3c 55 35 39 35 34 3e  0a 3c 55 35 39 36 45 3e  |.<U5954>.<U596E>|
    00000080  0a 3c 55 35 46 46 46 3e  0a 3c 55 36 31 41 34 3e  |.<U5FFF>.<U61A4>|
    00000090  0a 3c 55 36 32 36 45 3e  0a 3c 55 36 36 31 30 3e  |.<U626E>.<U6610>|
    000000a0  0a 3c 55 36 43 37 45 3e  0a 3c 55 37 31 31 41 3e  |.<U6C7E>.<U711A>|
    000000b0  0a 3c 55 37 36 43 36 3e  0a 3c 55 37 43 38 39 3e  |.<U76C6>.<U7C89>|
    000000c0  0a 3c 55 37 43 44 45 3e  0a 3c 55 37 44 31 42 3e  |.<U7CDE>.<U7D1B>|
    000000d0  0a 3c 55 38 32 41 43 3e  0a 3c 55 38 43 43 31 3e  |.<U82AC>.<U8CC1>|
    000000e0  0a 3c 55 39 36 46 30 3e  0a 3c 55 46 39 36 37 3e  |.<U96F0>.<UF967>|
    000000f0  0a 3c 55 34 46 35 42 3e  0a 3c 55 35 46 31 37 3e  |.<U4F5B>.<U5F17>|
    00000100  0a 3c 55 35 46 37 46 3e  0a 3c 55 36 32 43 32 3e  |.<U5F7F>.<U62C2>|
    00000110  0a 3c 55 35 44 32 39 3e  0a 3c 55 36 37 30 42 3e  |.<U5D29>.<U670B>|
    00000120  0a 3c 55 36 38 44 41 3e  0a 3c 55 37 38 37 43 3e  |.<U68DA>.<U787C>|
    00000130  0a 3c 55 37 45 34 33 3e  0a 3c 55 39 44 36 43 3e  |.<U7E43>.<U9D6C>|
    00000140  0a 3c 55 34 45 31 35 3e  0a 3c 55 35 30 39 39 3e  |.<U4E15>.<U5099>|
    00000150  0a 3c 55 35 33 31 35 3e  0a 3c 55 35 33 32 41 3e  |.<U5315>.<U532A>|
    00000160  0a 3c 55 35 33 35 31 3e  0a 3c 55 35 39 38 33 3e  |.<U5351>.<U5983>|
    00000170  0a 3c 55 35 41 36 32 3e  0a 3c 55 35 45 38 37 3e  |.<U5A62>.<U5E87>|
    00000180  0a 3c 55 36 30 42 32 3e  0a 3c 55 36 31 38 41 3e  |.<U60B2>.<U618A>|
    00000190  0a 3c 55 36 32 34 39 3e  0a 3c 55 36 32 37 39 3e  |.<U6249>.<U6279>|
    000001a0  0a 3c 55 36 35 39 30 3e  0a 3c 55 36 37 38 37 3e  |.<U6590>.<U6787>|
    000001b0  0a 3c 55 36 39 41 37 3e  0a 3c 55 36 42 44 00 fe  |.<U69A7>.<U6BD..|
    000001c0  ff ff 83 fe ff ff 02 00  00 00 00 f8 94 00 00 00  |................|
    000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    *
    000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
    00000200
    It may be in a peculiar state after my abortive attempts to resolve this.

    I shall be grateful for advice which enables me to boot into the external disc os(s).
    Intelligence - that which leads to harmony

  2. #2
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    Re: no such device: error from boot but Nautilus sees it OK

    Anyone?
    Intelligence - that which leads to harmony

  3. #3
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    Re: no such device: error from boot but Nautilus sees it OK

    I still don't know why, but my new desktop has trouble with grub2 trying to boot a partition farther out on a 500 GB USB hard drive (which boots fine on different laptops from 2006), even though the desktop boots Ubuntu fine from the far end of its 1 TB internal drive. Although, the error I got in the past from grub rescue was: unknown filesystem (for ext3 or ext4). The desktop works fine booting Ubuntu on a partition closer to the beginning an identical 500 GB USB hd (or anywhere on 160 GB USB hd), but I don't know where the cutoff point is that works. Note:

    =================== sdb6: Location of files loaded by Grub: ===================


    262.4GB: boot/grub/core.img
    284.5GB: boot/grub/grub.cfg
    222.7GB: boot/initrd.img-2.6.32-26-generic
    222.9GB: boot/initrd.img-2.6.35-23-generic
    262.4GB: boot/vmlinuz-2.6.32-26-generic
    262.5GB: boot/vmlinuz-2.6.35-23-generic
    222.9GB: initrd.img
    222.7GB: initrd.img.old
    262.5GB: vmlinuz
    262.4GB: vmlinuz.old

    Maybe it would help to have a separate /boot partition at the beginning of the drive. Was Maverick able to boot from USB before installing Natty?

    But you also have older kernels than current kernels in Natty, so not sure if that is an issue. Although, I use 64-bit, so my current uname -a is: Linux natty-ssd 2.6.37-11-generic #25-Ubuntu SMP Tue Dec 21 23:42:56 UTC 2010 x86_64 GNU/Linux

    I don't have Natty on USB hard drive, but I did have Natty on 8 GB USB stick, and now have Kubuntu Natty regular install on that stick. I currently boot Natty from internal SSD with grub2 on that /dev/sdb as boot drive (Win7 & Maverick are on 1 TB hda).
    i5 650 3.2 GHz upgraded to i7 870, 16 GB 1333 RAM, nvidia GTX 1060, 32" 1080p & assorted older computers

  4. #4
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    Re: no such device: error from boot but Nautilus sees it OK

    From what you've posted so far I assume you can boot the 10.10 on sda2, eh? If so the very first thing I'd do is boot into it and run:

    Code:
    sudo update-grub
    Wait for it to say done and see what happens. If the Natty on sdb1 and 10.10 on sdb6 still fail to boot read on.

    I see your drives are as follows:

    Disk /dev/sda: 30.0 GB
    Disk /dev/sdb: 320.1 GB

    And the MBR's are assigned as follows:

    => Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in
    partition #2 for (,msdos2)/boot/grub.
    => Grub 2 is installed in the MBR of /dev/sdb and looks on the same drive in
    partition #6 for (,msdos6)/boot/grub.
    So the next thing I'd try is changing the hard drive boot order in BIOS and see if either sdb1 or sdb6 will boot.

    If things are still a no-go on both sdb1 and sdb6 I'd like to see the output of:

    Code:
    sudo parted -l
    I should also mention that you appear to have mixed grub2 and legacy grub files on Natty, but I'd not worry about that until we can get the 10.10 on sdb6 booting

  5. #5
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    Re: no such device: error from boot but Nautilus sees it OK

    Quote Originally Posted by kansasnoob View Post
    From what you've posted so far I assume you can boot the 10.10 on sda2, eh? If so the very first thing I'd do is boot into it and run:

    Code:
    sudo update-grub
    Wait for it to say done and see what happens. If the Natty on sdb1 and 10.10 on sdb6 still fail to boot read on.
    Yes 10.10 on sda boots as did the sdb installs prior to the last two updates to 10.10 on sda. No change from sudo update-grub.

    Quote Originally Posted by kansasnoob View Post
    I see your drives are as follows:

    Disk /dev/sda: 30.0 GB
    Disk /dev/sdb: 320.1 GB

    And the MBR's are assigned as follows:



    So the next thing I'd try is changing the hard drive boot order in BIOS and see if either sdb1 or sdb6 will boot.
    The Acer is eight years old and only offers Hard Disk, CD/DVD, Floppy Disk and Networks boot options - it does not have a USB Disk option.

    Quote Originally Posted by kansasnoob View Post
    If things are still a no-go on both sdb1 and sdb6 I'd like to see the output of:

    Code:
    sudo parted -l
    I should also mention that you appear to have mixed grub2 and legacy grub files on Natty, but I'd not worry about that until we can get the 10.10 on sdb6 booting
    Code:
    cpm@TM-292:~$ sudo parted -l
    Model: ATA IC25N030ATMR04-0 (scsi)
    Disk /dev/sda: 30.0GB
    Sector size (logical/physical): 512B/512B
    Partition Table: msdos
    
    Number  Start   End     Size    Type      File system  Flags
     1      32.3kB  19.5GB  19.5GB  primary   fat32        boot, lba
     2      19.5GB  25.0GB  5487MB  primary   ext4
     4      25.0GB  30.0GB  4999MB  extended
     5      25.0GB  30.0GB  4999MB  logical   ext4
     3      30.0GB  30.0GB  8225kB  primary   fat16        hidden, lba
    
    
    Model: WDC WD32 00BEVT-22ZCT0 (scsi)
    Disk /dev/sdb: 320GB
    Sector size (logical/physical): 512B/512B
    Partition Table: msdos
    
    Number  Start   End     Size    Type      File system     Flags
     1      32.3kB  10.7GB  10.7GB  primary   ext4            boot
     2      10.7GB  320GB   309GB   extended
     8      10.7GB  21.0GB  10.2GB  logical   ext4
     5      100GB   221GB   121GB   logical   ext4
     6      221GB   316GB   94.6GB  logical   ext4
     7      316GB   320GB   4056MB  logical   linux-swap(v1)
    
    
    cpm@TM-292:~$
    Since my first post I installed another 10.10 in sdb8 (10Gb of 90 Gb that I use for additional installs or attempted repairs) in the hope it might sort it for me but no change.
    Intelligence - that which leads to harmony

  6. #6
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    Re: no such device: error from boot but Nautilus sees it OK

    bump
    Intelligence - that which leads to harmony

  7. #7
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    Re: no such device: error from boot but Nautilus sees it OK

    I am no expert regarding grub2, Linux or anything in particular

    Perhaps a tenable temporary workaround could be to roll back the updates to grub2 and post a bug report ( https://help.ubuntu.com/community/Sy...kage%20version https://help.ubuntu.com/community/ReportingBugs - no doubt you knew exactly where these are )


    I haven't researched, I'm guessing that you can access it in nautilus because a module for the kernel that takes care of USB storage in older PCs, where the BIOS doesn't take care of USB storage access, is being loaded as it ought and perhaps they've dropped similar functionality (ie., a similar module(/part of) grub2 has been dropped) rendering the loader blind to your USB storage till a kernel is up and running with it's module - if I'm right then it will never boot off a USB device using that(/these) version(s) of grub2 in a PC that doesn't 'connect' USB storage in BIOS(/low level).

    Being accessible once a kernel is actually booted, 'update-grub' and similar utilities can 'see' the USB storage and so can happily have it/them listed in the boot menu but if grub2 has been treated/borked as I've guessed then it cannot 'see' them.


    I decided to at least check the changelog for grub2 under 10.10 before posting it is attached, I found the odd entry that made me wonder if that was what borked it for you, but I didn't come across an entry that made me think that my guess is right for sure.


    (I have subscribed this thread)
    Attached Files Attached Files
    NEED HELP? | [SOLVED] | MS hide
    A little nonsense now and then...
    .
    If this is a game thread and you are going to post I hope you have read the Original Post.

  8. #8
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    Re: no such device: error from boot but Nautilus sees it OK

    @robsoles - reply as per pm.

    Only current version of grub2 available - cannot -force earlier version - same in Lucid.

    Grub2 amends replaces device.map with probe which may miss usb disks when bios hasn't the option to boot from usb.
    Intelligence - that which leads to harmony

  9. #9
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    Re: no such device: error from boot but Nautilus sees it OK

    Just in case you missed this step: The instructions regarding rolling back packages that I linked to previously mention "reloading" the updates so Synaptic is 'aware' of updates so as to roll them back.
    NEED HELP? | [SOLVED] | MS hide
    A little nonsense now and then...
    .
    If this is a game thread and you are going to post I hope you have read the Original Post.

  10. #10
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    Re: no such device: error from boot but Nautilus sees it OK

    Yes I did reload but force version greyed out for Maverick and for Lucid so I guess the older versions are no longer in the repositories.

    edit: server for United Kingdom
    Last edited by cpmman; January 8th, 2011 at 08:18 AM.
    Intelligence - that which leads to harmony

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