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View Full Version : [SOLVED] Problems booting with grub with multiple hard drives


ledimies
January 23rd, 2011, 10:30 AM
Hi,

I have 3 hard drives installed to my system, 1TB, 2TB and 500GB drives with the following configuration:

ledi@ledi-ubuntu:~$ sudo parted /dev/sda print
Model: ATA SAMSUNG HD103UJ (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number Start End Size Type File system Flags
1 1049kB 106MB 105MB primary ntfs boot
2 106MB 62.9GB 62.8GB primary ntfs
3 62.9GB 916GB 853GB primary ntfs
4 916GB 1000GB 83.9GB extended
5 916GB 957GB 40.2GB logical ext4
7 957GB 997GB 40.2GB logical ext4
6 997GB 1000GB 3461MB logical linux-swap(v1)


ledi@ledi-ubuntu:~$ sudo parted /dev/sdb print
Model: ATA WDC WD20EARS-00M (scsi)
Disk /dev/sdb: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 1049kB 40.0GB 40.0GB ext4
2 40.0GB 40.0GB 10.0MB primary bios_grub
5 40.0GB 80.0GB 40.0GB primary
3 80.0GB 83.5GB 3500MB linux-swap(v1)
4 83.5GB 2000GB 1917GB lvm


ledi@ledi-ubuntu:~$ sudo parted /dev/sdc print
Model: ATA SAMSUNG HD501LJ (scsi)
Disk /dev/sdc: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number Start End Size Type File system Flags
1 32.3kB 500GB 500GB primary ntfs

I have Windows 7 and 2 Ubuntu installations in the 1TB disk. I recently installed the 2TB disk to my system and installed one more Ubuntu to that one.

My problem is that after installing Ubuntu to the 2TB drive, I no longer could boot to any of the OS's in the 1TB drive. Grub correctly detected all the installations, but whenever I try to select one of those, I get the following errors from Grub:

error: no such device: [long string of numbers and letters]
error: no such partition.
When selecting Linux, I see an additional line:
error: you need to load the kernel first.

I can boot to the Ubuntu installation in the 2TB drive. My problem reversed when I reinstalled grub to one of the Ubuntu installations in the 1TB drive. I can boot to any of the OS's in the 1TB drive, but not to the Ubuntu in the 2TB drive. The error message is the same as above.

I have no idea what am I doing wrong and I would be really grateful for any assistance.
aqualad
January 23rd, 2011, 11:40 AM
I've been doing very similar stuff tonight on a new installation, here are some tips:

1. Make sure that wherever you have your bootloaders, the partitions are given the bootable flag (do so in gparted)
2. If you are having issues with grub, try
sudo apt-get purge grub-pc grub-common
sudo apt-get install grub-pc grub-common

You can then choose which devices to install grub to while it's reinstalling.
3. Try booting the R.I.P. (Recovery is Possible) iso to see if you can fix anything that way.

I dual boot with LVM and soft raid, so I just made a 100MB partition (sda1) and slapped grub on that and everything went from there.

Good luck
ledimies
January 23rd, 2011, 01:44 PM
After reading my initial post, I realized that I'm not describing the problem very well.

Grub is installing itself without any error messages and it detects the installed operating systems, so they appear to the selection list whenever I boot the computer. So I do see the Grub bootloader menu.

I can use the following command to reinstall grub to any of the Linux partitions: "sudo grub-install --root-directory=[mounted_root_fs_of_some_linux] /dev/sda". I always use /dev/sda as the install device.

If I install grub to the linux partition in sdb, I can boot to Linux installed to sdb, but I cannot boot to any of the operating system in sda. I do see the selection for those OS's in the Grub bootloader menu, but I get the error in my first message whenever I try to select any of them.

If I install grub to either one of the linux partitions in sda, my problem is reversed. I can boot to OS's in the sda drive, but not to the Linux in sdb.

As far as I know it should be possible with Grub to do what I'm trying to do. It remains a mystery to me why I get these error messages even though I get no errors while installing and configuring grub.
ledimies
January 23rd, 2011, 02:26 PM
Here is the output of boot info script in my system:


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 #7 for /boot/grub.
=> Grub 2 is installed in the MBR of /dev/sdb and looks at sector 78125056 of
the same hard drive for core.img, but core.img can not be found at this
location.
=> Windows is installed in the MBR of /dev/sdc

sda1: __________________________________________________ _______________________

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: /bootmgr /Boot/BCD

sda2: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files/dirs: /Windows/System32/winload.exe

sda3: __________________________________________________ _______________________

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:

sda4: __________________________________________________ _______________________

File system: Extended Partition
Boot sector type: -
Boot sector info:

sda5: __________________________________________________ _______________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: yavdr 0.2.0 (based on Ubuntu
10.04)
Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img

sda6: __________________________________________________ _______________________

File system: swap
Boot sector type: -
Boot sector info:

sda7: __________________________________________________ _______________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 10.04.1 LTS
Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img

sdb1: __________________________________________________ _______________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: yavdr 0.3.0 (based on Ubuntu
10.04)
Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img

sdb2: __________________________________________________ _______________________

File system: Bios Boot Partition
Boot sector type: Unknown
Boot sector info:

sdb3: __________________________________________________ _______________________

File system: swap
Boot sector type: -
Boot sector info:

sdb4: __________________________________________________ _______________________

File system:
Boot sector type: -
Boot sector info:
Mounting failed:
mount: unknown filesystem type ''

sdb5: __________________________________________________ _______________________

File system:
Boot sector type: -
Boot sector info:
Mounting failed:
mount: unknown filesystem type ''
mount: unknown filesystem type ''

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:

=========================== Drive/Partition Info: =============================

Drive: sda ___________________ __________________________________________________ ___

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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 * 2,048 206,847 204,800 7 HPFS/NTFS
/dev/sda2 206,848 122,882,047 122,675,200 7 HPFS/NTFS
/dev/sda3 122,882,048 1,789,679,615 1,666,797,568 7 HPFS/NTFS
/dev/sda4 1,789,681,662 1,953,523,711 163,842,050 5 Extended
/dev/sda5 1,789,681,664 1,868,214,914 78,533,251 83 Linux
/dev/sda6 1,946,763,264 1,953,523,711 6,760,448 82 Linux swap / Solaris
/dev/sda7 1,868,216,320 1,946,755,071 78,538,752 83 Linux


Drive: sdb ___________________ __________________________________________________ ___

Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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 1 3,907,029,167 3,907,029,167 ee GPT


GUID Partition Table detected.

Partition Start End Size System
/dev/sdb1 2,048 78,125,055 78,123,008 Linux or Data
/dev/sdb2 78,125,056 78,144,587 19,532 Bios Boot Partition
/dev/sdb3 156,250,112 163,086,335 6,836,224 Linux Swap
/dev/sdb4 163,086,336 3,907,028,991 3,743,942,656 LVM
/dev/sdb5 78,145,536 156,250,111 78,104,576 Linux or Data

Drive: sdc ___________________ __________________________________________________ ___

Disk /dev/sdc: 500.1 GB, 500107862016 bytes
16 heads, 63 sectors/track, 969021 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/sdc1 63 976,770,143 976,770,081 7 HPFS/NTFS


blkid -c /dev/null: __________________________________________________ __________

Device UUID TYPE LABEL

/dev/sda1 0C26C76226C74C00 ntfs System Reserved
/dev/sda2 7A5CDCA35CDC5B87 ntfs
/dev/sda3 1476E89C76E8803A ntfs New Volume
/dev/sda4: PTTYPE="dos"
/dev/sda5 cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ext4
/dev/sda6 61e8fb53-6eaf-409e-afd8-aca5440fb267 swap
/dev/sda7 644726ea-90d4-4b50-8cbd-4fe381e10def ext4
/dev/sda: PTTYPE="dos"
/dev/sdb1 3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ext4
/dev/sdb3 d507fe05-74b7-4e86-8a5a-71c469b91523 swap
/dev/sdb: PTTYPE="gpt"
/dev/sdc1 88A00ABBA00AAFAC ntfs Datra
/dev/sdc: PTTYPE="dos"

============================ "mount | grep ^/dev output: ===========================

Device Mount_Point Type Options

/dev/sda7 / ext4 (rw,errors=remount-ro)


=========================== sda5/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="4"
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 ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
set locale_dir=($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' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro quiet noresume
initrd /boot/initrd.img-2.6.32-24-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
echo 'Loading Linux 2.6.32-24-generic ...'
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-24-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro quiet noresume
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='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
echo 'Loading Linux 2.6.32-22-generic ...'
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-22-generic
}
### END /etc/grub.d/10_linux ###

### 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 0c26c76226c74c00
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/50_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.
if [ ${recordfail} = 1 ]; then
set timeout=5
else
set timeout=5
fi

### END /etc/grub.d/50_custom ###

=============================== sda5/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/sda5 during installation
UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf / ext4 errors=remount-ro 0 1
# swap was on /dev/sda6 during installation
UUID=61e8fb53-6eaf-409e-afd8-aca5440fb267 none swap sw 0 0

=================== sda5: Location of files loaded by Grub: ===================


916.3GB: boot/grub/core.img
947.0GB: boot/grub/grub.cfg
916.3GB: boot/initrd.img-2.6.32-22-generic
916.4GB: boot/initrd.img-2.6.32-24-generic
916.3GB: boot/vmlinuz-2.6.32-22-generic
916.3GB: boot/vmlinuz-2.6.32-24-generic
916.4GB: initrd.img
916.3GB: initrd.img.old
916.3GB: vmlinuz
916.3GB: vmlinuz.old

=========================== sda7/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 ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
set locale_dir=($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 2.6.32-27-generic-pae' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
linux /boot/vmlinuz-2.6.32-27-generic-pae root=UUID=644726ea-90d4-4b50-8cbd-4fe381e10def ro quiet splash
initrd /boot/initrd.img-2.6.32-27-generic-pae
}
menuentry 'Ubuntu, with Linux 2.6.32-27-generic-pae (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
echo 'Loading Linux 2.6.32-27-generic-pae ...'
linux /boot/vmlinuz-2.6.32-27-generic-pae root=UUID=644726ea-90d4-4b50-8cbd-4fe381e10def ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-27-generic-pae
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
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 0c26c76226c74c00
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 cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro quiet noresume
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 cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro single
initrd /boot/initrd.img-2.6.32-24-generic
}
menuentry "Ubuntu, with Linux 2.6.32-22-generic (on /dev/sda5)" {
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro quiet noresume
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry "Ubuntu, with Linux 2.6.32-22-generic (recovery mode) (on /dev/sda5)" {
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro single
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry "Ubuntu, with Linux 2.6.32-27-generic (on /dev/sdb1)" {
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
linux /boot/vmlinuz-2.6.32-27-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro vmalloc=256m quiet noresume nohz=off acpi_enforce_resources=lax
initrd /boot/initrd.img-2.6.32-27-generic
}
menuentry "Ubuntu, with Linux 2.6.32-27-generic (recovery mode) (on /dev/sdb1)" {
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
linux /boot/vmlinuz-2.6.32-27-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro single
initrd /boot/initrd.img-2.6.32-27-generic
}
menuentry "Ubuntu, with Linux 2.6.32-25-generic (on /dev/sdb1)" {
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
linux /boot/vmlinuz-2.6.32-25-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro vmalloc=256m quiet noresume nohz=off acpi_enforce_resources=lax
initrd /boot/initrd.img-2.6.32-25-generic
}
menuentry "Ubuntu, with Linux 2.6.32-25-generic (recovery mode) (on /dev/sdb1)" {
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
linux /boot/vmlinuz-2.6.32-25-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro single
initrd /boot/initrd.img-2.6.32-25-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 ###

=============================== sda7/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/sda7 during installation
UUID=644726ea-90d4-4b50-8cbd-4fe381e10def / ext4 errors=remount-ro 0 1
# swap was on /dev/sda6 during installation
UUID=61e8fb53-6eaf-409e-afd8-aca5440fb267 none swap sw 0 0

=================== sda7: Location of files loaded by Grub: ===================


963.1GB: boot/grub/core.img
971.8GB: boot/grub/grub.cfg
963.3GB: boot/initrd.img-2.6.32-27-generic-pae
963.2GB: boot/vmlinuz-2.6.32-27-generic-pae
963.3GB: initrd.img
963.2GB: vmlinuz

=========================== 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 $prefix/grubenv ]; then
load_env
fi
set default="${saved_entry}"
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 ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
set locale_dir=($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 2.6.32-27-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
linux /boot/vmlinuz-2.6.32-27-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro vmalloc=256m quiet noresume nohz=off acpi_enforce_resources=lax
initrd /boot/initrd.img-2.6.32-27-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-27-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
echo 'Loading Linux 2.6.32-27-generic ...'
linux /boot/vmlinuz-2.6.32-27-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-27-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-25-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
linux /boot/vmlinuz-2.6.32-25-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro vmalloc=256m quiet noresume nohz=off acpi_enforce_resources=lax
initrd /boot/initrd.img-2.6.32-25-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-25-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd1,1)'
search --no-floppy --fs-uuid --set 3af5b82e-175c-4050-bb2e-8dbcb630c7e1
echo 'Loading Linux 2.6.32-25-generic ...'
linux /boot/vmlinuz-2.6.32-25-generic root=UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-25-generic
}
### END /etc/grub.d/10_linux ###

### 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 0c26c76226c74c00
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 cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro quiet noresume
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 cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro single
initrd /boot/initrd.img-2.6.32-24-generic
}
menuentry "Ubuntu, with Linux 2.6.32-22-generic (on /dev/sda5)" {
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro quiet noresume
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry "Ubuntu, with Linux 2.6.32-22-generic (recovery mode) (on /dev/sda5)" {
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=cb9e3e02-3c5b-4575-84b5-51b0d70cb8bf ro single
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry "Ubuntu, with Linux 2.6.32-27-generic-pae (on /dev/sda7)" {
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
linux /boot/vmlinuz-2.6.32-27-generic-pae root=UUID=644726ea-90d4-4b50-8cbd-4fe381e10def ro quiet splash
initrd /boot/initrd.img-2.6.32-27-generic-pae
}
menuentry "Ubuntu, with Linux 2.6.32-27-generic-pae (recovery mode) (on /dev/sda7)" {
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 644726ea-90d4-4b50-8cbd-4fe381e10def
linux /boot/vmlinuz-2.6.32-27-generic-pae root=UUID=644726ea-90d4-4b50-8cbd-4fe381e10def ro single
initrd /boot/initrd.img-2.6.32-27-generic-pae
}
### 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/50_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.
if [ ${recordfail} = 1 ]; then
set timeout=5
else
set timeout=5
fi

### END /etc/grub.d/50_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 nodev,noexec,nosuid 0 0
# / was on /dev/sdb1 during installation
UUID=3af5b82e-175c-4050-bb2e-8dbcb630c7e1 / ext4 errors=remount-ro 0 1
# swap was on /dev/sdb3 during installation
UUID=d507fe05-74b7-4e86-8a5a-71c469b91523 none swap sw 0 0

=================== sdb1: Location of files loaded by Grub: ===================


34.5GB: boot/grub/core.img
34.5GB: boot/grub/grub.cfg
34.5GB: boot/initrd.img-2.6.32-25-generic
34.6GB: boot/initrd.img-2.6.32-27-generic
34.5GB: boot/vmlinuz-2.6.32-25-generic
34.5GB: boot/vmlinuz-2.6.32-27-generic
34.6GB: initrd.img
34.5GB: initrd.img.old
34.5GB: vmlinuz
34.5GB: vmlinuz.old
=========================== Unknown MBRs/Boot Sectors/etc =======================

Unknown BootLoader on sdb2

00000000 52 e8 28 01 74 08 56 be 33 81 e8 4c 01 5e bf f4 |R.(.t.V.3..L.^..|
00000010 81 66 8b 2d 83 7d 08 00 0f 84 e9 00 80 7c ff 00 |.f.-.}.......|..|
00000020 74 46 66 8b 1d 66 8b 4d 04 66 31 c0 b0 7f 39 45 |tFf..f.M.f1...9E|
00000030 08 7f 03 8b 45 08 29 45 08 66 01 05 66 83 55 04 |....E.)E.f..f.U.|
00000040 00 c7 04 10 00 89 44 02 66 89 5c 08 66 89 4c 0c |......D.f.\.f.L.|
00000050 c7 44 06 00 70 50 c7 44 04 00 00 b4 42 cd 13 0f |.D..pP.D....B...|
00000060 82 bb 00 bb 00 70 eb 68 66 8b 45 04 66 09 c0 0f |.....p.hf.E.f...|
00000070 85 a3 00 66 8b 05 66 31 d2 66 f7 34 88 54 0a 66 |...f..f1.f.4.T.f|
00000080 31 d2 66 f7 74 04 88 54 0b 89 44 0c 3b 44 08 0f |1.f.t..T..D.;D..|
00000090 8d 83 00 8b 04 2a 44 0a 39 45 08 7f 03 8b 45 08 |.....*D.9E....E.|
000000a0 29 45 08 66 01 05 66 83 55 04 00 8a 54 0d c0 e2 |)E.f..f.U...T...|
000000b0 06 8a 4c 0a fe c1 08 d1 8a 6c 0c 5a 52 8a 74 0b |..L......l.ZR.t.|
000000c0 50 bb 00 70 8e c3 31 db b4 02 cd 13 72 50 8c c3 |P..p..1.....rP..|
000000d0 8e 45 0a 58 c1 e0 05 01 45 0a 60 1e c1 e0 03 89 |.E.X....E.`.....|
000000e0 c1 31 ff 31 f6 8e db fc f3 a5 1f e8 3e 00 74 06 |.1.1........>.t.|
000000f0 be 3b 81 e8 63 00 61 83 7d 08 00 0f 85 1d ff 83 |.;..c.a.}.......|
00000100 ef 0c e9 0f ff e8 24 00 74 06 be 3d 81 e8 49 00 |......$.t..=..I.|
00000110 5a ea 00 82 00 00 be 40 81 e8 3d 00 eb 06 be 45 |Z......@..=....E|
00000120 81 e8 35 00 be 4a 81 e8 2f 00 eb fe bb 17 04 80 |..5..J../.......|
00000130 27 03 c3 6c 6f 61 64 69 6e 67 00 2e 00 0d 0a 00 |'..loading......|
00000140 47 65 6f 6d 00 52 65 61 64 00 20 45 72 72 6f 72 |Geom.Read. Error|
00000150 00 bb 01 00 b4 0e cd 10 46 8a 04 3c 00 75 f2 c3 |........F..<.u..|
00000160 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000001f0 00 00 00 00 01 18 a8 04 00 00 00 00 2f 00 20 08 |............/. .|
00000200
kansasnoob
January 23rd, 2011, 02:50 PM
I'm personally a big believer in installing the controlling OS's grub2 to the MBR of all drives, eg:


sudo grub-install /dev/sda
sudo grub-install /dev/sdb
sudo grub-install /dev/sdc

Not everyone agrees with me but it's the lazy mans way out of device mapping errors :D
srs5694
January 23rd, 2011, 06:51 PM
Your problem may be a bug in GRUB that prevents it from booting Windows when you've got a mixture of MBR and GPT disks (as you do have). The solution to this problem is to add the following line to /etc/default/grub:


GRUB_PRELOAD_MODULES="part_msdos"


I believe you've got to then re-run grub-mkconfig.
ledimies
January 23rd, 2011, 08:06 PM
Your problem may be a bug in GRUB that prevents it from booting Windows when you've got a mixture of MBR and GPT disks (as you do have). The solution to this problem is to add the following line to /etc/default/grub:


GRUB_PRELOAD_MODULES="part_msdos"
I believe you've got to then re-run grub-mkconfig.

I believe you are talking about bug: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/604743

My situation is currently the other way around, I'm booting from MBR disk and I can't get to operating systems in GPT disk.

I added the following line to /etc/default/grub and run update-grub:

GRUB_PRELOAD_MODULES="part_gpt"Now everything works for me again. Thanks for the tip!