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Thread: Grub 2 Basics

  1. #481
    Join Date
    Feb 2007
    Location
    perdita
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    1,622
    Distro
    Ubuntu

    Re: Grub 2 Basics

    [edit]
    Nevermind. It's working now. There was a "GRUB_SAVEDEFAULT=1" entry remaining after the "GRUB_SAVEDEFAULT=true". I only noticed it after posting here. ^^'
    [/edit]

    I just can't get grub 2 to save the last booted entry.
    Here's my /etc/default/grub:
    Code:
    # If you change this file, run 'update-grub' afterwards to update
    # /boot/grub/grub.cfg.
    
    GRUB_DEFAULT=saved
    #GRUB_DEFAULT="Windows Vista (loader) (on /dev/sda1)"
    #GRUB_DEFAULT=0
    
    GRUB_SAVEDEFAULT=true
    
    #GRUB_HIDDEN_TIMEOUT=0
    GRUB_HIDDEN_TIMEOUT_QUIET=true
    GRUB_TIMEOUT=10
    GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    GRUB_CMDLINE_LINUX=""
    
    # Uncomment to disable graphical terminal (grub-pc only)
    #GRUB_TERMINAL=console
    
    # The resolution used on graphical terminal
    # note that you can use only modes which your graphic card supports via VBE
    # you can see them in real GRUB with the command `vbeinfo'
    #GRUB_GFXMODE=640x480
    
    # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
    #GRUB_DISABLE_LINUX_UUID=true
    
    # Uncomment to disable generation of recovery mode menu entries
    #GRUB_DISABLE_LINUX_RECOVERY="true"
    
    # Uncomment to get a beep at grub start
    #GRUB_INIT_TUNE="480 440 1"
    Last edited by KIAaze; May 22nd, 2010 at 10:17 AM.

  2. #482
    Join Date
    Jan 2009
    Beans
    5

    Install freezes

    Love Ubuntu.

    Hit a logjam on another machine.

    I've got a Windows box that freezes during wubi, live cd or USB install of Ubuntu.

    Any thoughts / suggestions?

    Thanx

  3. #483
    Join Date
    Jan 2007
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: Install freezes

    Quote Originally Posted by budlyapi View Post
    Love Ubuntu.

    Hit a logjam on another machine.

    I've got a Windows box that freezes during wubi, live cd or USB install of Ubuntu.

    Any thoughts / suggestions?

    Thanx
    I'd recommend starting a new thread if you can't find a solution already posted. Be a bit more descriptive about where in the process the system freezes and what kind of computer you are trying to install it on (especially if the specs are suspect/older machine).

    The first advice you are likely to get is do an MD5SUM check to make sure the CD isn't corrupted, and next will be to burn the ISO at a slower speed. The third will probably be to try the Alternate CD, which is a bit more forgiving during the installation process.

    Good luck.
    GRUB2

    Retired.

  4. #484
    Join Date
    Jun 2009
    Location
    Little Rock, Arkansas
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    190
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Grub 2 Basics

    I entered "sudo fdisk -f", logged in under Ubuntu 8.04 live cd in "try without installing mode". Got this"

    Disk /dev/sda: 160.0 GB, 160000000000 bytes
    255 heads, 63 sectors/track, 19452 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x17921791

    Device Boot Start End Blocks Id System
    /dev/sda1 * 1 18702 150215680 83 Linux
    /dev/sda2 18702 19453 6031361 5 Extended
    /dev/sda5 18702 19453 6031360 82 Linux swap / Solaris

    Disk /dev/sdb: 160.0 GB, 160000000000 bytes
    255 heads, 63 sectors/track, 19452 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x00045f69

    Device Boot Start End Blocks Id System
    /dev/sdb1 1 18702 150223783+ 83 Linux
    /dev/sdb2 18703 19452 6024375 5 Extended
    /dev/sdb5 18703 19452 6024343+ 82 Linux swap / Solaris

  5. #485
    Join Date
    Jun 2009
    Location
    Little Rock, Arkansas
    Beans
    190
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Grub 2 Basics

    Randy Schilling is online now Reply With Quote

    pls confirm,

    This is to confirm that you have the output to my fdisk command

  6. #486
    Join Date
    Sep 2007
    Beans
    27
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: Grub 2 Basics

    I had (still have, actually) Vista installed on one of my HDDs and installed 10.04 on one of my other HDDs (both SATA).

    Now, I can't boot into Vista. Whenever I do update-grub I get the following output:

    Code:
    Generating grub.cfg ...
    Found linux image: /boot/vmlinuz-2.6.32-22-generic
    Found initrd image: /boot/initrd.img-2.6.32-22-generic
    Found linux image: /boot/vmlinuz-2.6.32-21-generic
    Found initrd image: /boot/initrd.img-2.6.32-21-generic
    Found memtest86+ image: /boot/memtest86+.bin
    done
    I've tried reading through the grub2 tutorial stuff and holy crap it's confusing... Can anyone help me figure out why my Vista partition isn't being picked up by Grub?

    Thanks!

  7. #487
    Join Date
    Sep 2007
    Beans
    27
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: Grub 2 Basics

    I ran Boot Info Script, in the event that this information can help someone give me info on how to get GRUB to properly see my Vista partition.

    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 /boot/grub.
     => Windows is installed in the MBR of /dev/sdb
     => Windows is installed in the MBR of /dev/sdc
     => Windows is installed in the MBR of /dev/sdd
    
    sda1: _________________________________________________________________________
    
        File system:       Extended Partition
        Boot sector type:  -
        Boot sector info:  
    
    sda5: _________________________________________________________________________
    
        File system:       swap
        Boot sector type:  -
        Boot sector info:  
    
    sda2: _________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info:  
        Operating System:  Ubuntu 10.04 LTS
        Boot files/dirs:   /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
    
    sda3: _________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info:  
        Operating System:  
        Boot files/dirs:   
    
    sdb1: _________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows Vista/7
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files/dirs:   
    
    sdc1: _________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows XP
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files/dirs:   
    
    sdd1: _________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows Vista/7
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  Windows Vista
        Boot files/dirs:   /Windows/System32/winload.exe
    
    =========================== Drive/Partition Info: =============================
    
    Drive: sda ___________________ _____________________________________________________
    
    Disk /dev/sda: 80.0 GB, 80000000000 bytes
    255 heads, 63 sectors/track, 9726 cylinders, total 156250000 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               2,046    15,624,191    15,622,146   5 Extended
    /dev/sda5               2,048    15,624,191    15,622,144  82 Linux swap / Solaris
    /dev/sda2    *     15,624,192    44,920,831    29,296,640  83 Linux
    /dev/sda3          44,920,832   156,248,063   111,327,232  83 Linux
    
    
    Drive: sdb ___________________ _____________________________________________________
    
    Disk /dev/sdb: 500.1 GB, 500107862016 bytes
    255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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   976,768,064   976,768,002   7 HPFS/NTFS
    
    
    Drive: sdc ___________________ _____________________________________________________
    
    Disk /dev/sdc: 80.0 GB, 80026361856 bytes
    255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    
    Partition  Boot         Start           End          Size  Id System
    
    /dev/sdc1    *             63   156,296,384   156,296,322   7 HPFS/NTFS
    
    
    Drive: sdd ___________________ _____________________________________________________
    
    Disk /dev/sdd: 80.0 GB, 80000000000 bytes
    255 heads, 63 sectors/track, 9726 cylinders, total 156250000 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    
    Partition  Boot         Start           End          Size  Id System
    
    /dev/sdd1    *             63   156,232,124   156,232,062   7 HPFS/NTFS
    
    
    blkid -c /dev/null: ____________________________________________________________
    
    Device           UUID                                   TYPE       LABEL                         
    
    /dev/sda1: PTTYPE="dos" 
    /dev/sda2        77ddb452-3a4d-48fb-8f67-a7c4e0da87a0   ext4                                     
    /dev/sda3        7e619c5d-ce45-43d4-bb27-f2fe19baf767   ext4                                     
    /dev/sda5        74778471-e238-4c1d-8890-67967d7f009b   swap                                     
    /dev/sda: PTTYPE="dos" 
    /dev/sdb1        729C56339C55F259                       ntfs       magrathea                     
    /dev/sdb: PTTYPE="dos" 
    /dev/sdc1        ECB89E61B89E29DA                       ntfs       Games                         
    /dev/sdc: PTTYPE="dos" 
    /dev/sdd1        32CECA2CCEC9E865                       ntfs                                     
    /dev/sdd: PTTYPE="dos" 
    
    ============================ "mount | grep ^/dev  output: ===========================
    
    Device           Mount_Point              Type       Options
    
    /dev/sda2        /                        ext4       (rw,errors=remount-ro)
    /dev/sda3        /home                    ext4       (rw)
    /dev/sdb1        /media/magrathea         fuseblk    (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
    
    
    =========================== sda2/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 ${boot_once} ]; then save_env recordfail; fi; fi
    }
    insmod ext2
    set root='(hd0,2)'
    search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    if loadfont /usr/share/grub/unicode.pf2 ; then
    set gfxmode=1600x1200
      insmod gfxterm
      insmod vbe
      if terminal_output gfxterm ; then true ; else
        # For backward compatibility with versions of terminal.mod that don't
        # understand terminal_output
        terminal gfxterm
      fi
    fi
    insmod ext2
    set root='(hd0,2)'
    search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    set locale_dir=($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 2.6.32-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod ext2
    	set root='(hd0,2)'
    	search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    	linux	/boot/vmlinuz-2.6.32-22-generic root=UUID=77ddb452-3a4d-48fb-8f67-a7c4e0da87a0 ro   quiet splash
    	initrd	/boot/initrd.img-2.6.32-22-generic
    }
    menuentry 'Ubuntu, with Linux 2.6.32-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod ext2
    	set root='(hd0,2)'
    	search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    	echo	'Loading Linux 2.6.32-22-generic ...'
    	linux	/boot/vmlinuz-2.6.32-22-generic root=UUID=77ddb452-3a4d-48fb-8f67-a7c4e0da87a0 ro single 
    	echo	'Loading initial ramdisk ...'
    	initrd	/boot/initrd.img-2.6.32-22-generic
    }
    menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod ext2
    	set root='(hd0,2)'
    	search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    	linux	/boot/vmlinuz-2.6.32-21-generic root=UUID=77ddb452-3a4d-48fb-8f67-a7c4e0da87a0 ro   quiet splash
    	initrd	/boot/initrd.img-2.6.32-21-generic
    }
    menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod ext2
    	set root='(hd0,2)'
    	search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    	echo	'Loading Linux 2.6.32-21-generic ...'
    	linux	/boot/vmlinuz-2.6.32-21-generic root=UUID=77ddb452-3a4d-48fb-8f67-a7c4e0da87a0 ro single 
    	echo	'Loading initial ramdisk ...'
    	initrd	/boot/initrd.img-2.6.32-21-generic
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
    	insmod ext2
    	set root='(hd0,2)'
    	search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    	linux16	/boot/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
    	insmod ext2
    	set root='(hd0,2)'
    	search --no-floppy --fs-uuid --set 77ddb452-3a4d-48fb-8f67-a7c4e0da87a0
    	linux16	/boot/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    if [ ${timeout} != -1 ]; then
      if keystatus; then
        if keystatus --shift; then
          set timeout=-1
        else
          set timeout=0
        fi
      else
        if sleep --interruptible 3 ; then
          set timeout=0
        fi
      fi
    fi
    ### 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 ###
    
    =============================== 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=77ddb452-3a4d-48fb-8f67-a7c4e0da87a0 /               ext4    errors=remount-ro 0       1
    # /home was on /dev/sda3 during installation
    UUID=7e619c5d-ce45-43d4-bb27-f2fe19baf767 /home           ext4    defaults        0       2
    # swap was on /dev/sda5 during installation
    UUID=74778471-e238-4c1d-8890-67967d7f009b none            swap    sw              0       0
    /dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
    
    =================== sda2: Location of files loaded by Grub: ===================
    
    
      10.3GB: boot/grub/core.img
      15.2GB: boot/grub/grub.cfg
      10.4GB: boot/initrd.img-2.6.32-21-generic
      10.6GB: boot/initrd.img-2.6.32-22-generic
      10.3GB: boot/vmlinuz-2.6.32-21-generic
       8.2GB: boot/vmlinuz-2.6.32-22-generic
      10.6GB: initrd.img
      10.4GB: initrd.img.old
       8.2GB: vmlinuz
      10.3GB: vmlinuz.old
    Thanks

  8. #488
    Join Date
    Aug 2008
    Location
    South East Montana
    Beans
    6,153

    Re: Grub 2 Basics

    It is really best if you start your own thread.

    It is easier for you to keep track of and also for anyone trying to help you.

    It is easier for someone with the same type of problem to find it by funning a search.

    Why don't you do that, and post a link here?
    Dell 480 XPS 3G ram Quad Core 2.40GHz, Radeon HD 2400 PRO, Audigy1, 3x320G HDD, 320G External, Debian Testing for use, Debian Squeeze for secure use, Debian Sid for FUN

  9. #489
    Join Date
    Sep 2007
    Beans
    27
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: Grub 2 Basics

    Quote Originally Posted by ranch hand View Post
    It is really best if you start your own thread.

    It is easier for you to keep track of and also for anyone trying to help you.

    It is easier for someone with the same type of problem to find it by funning a search.

    Why don't you do that, and post a link here?
    I went ahead and started my own thread here.

    Sorry for the clutter.

    PS: to make matters worse, my wireless is completely flaky in ubuntu...

  10. #490
    Join Date
    Aug 2008
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Grub 2 Basics

    I'm having a little trouble with my attempt to boot a number of iso files using grub2, including a live clonezilla, gparted, ubuntu, and once I figure everything else out, I'd like to add my copy of spinrite and other utilities. I have posted a more detailed thread about this here if anybody would like to take a look. Thank you very much for your help.

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