Need to fix Grub - help needed

[biosol]

Hi,
I had ubuntu 64 11.10 with 3 swap files from previous installs I guess. Another post, recommended to delete any 2 of the swap partitions and ubuntu would use the other one. I used gparted to delete 2 of the 3 swap partitions and then resized the home partition to reclaim the (now) unused space.

Now I get this error:
error: no such partition.
grub rescue> _

This is a dual boot setup. Win7/Ubuntu.

Please advise how to recover the boot/grub

Thanks!

[darkod]

Follow the link in my signature to run the boot info script. Post the results as explained there. It will show more details.

I think it's not exactly true that it will use any swap file, you would need to make a change in /etc/fstab.

[biosol]

Thank you for your help. I have the Ubuntu 11.10 64-bit install CD. So I will boot to it and get the info you requested. One question. It's possible to download and install/run software on a LiveCD system? How?

[darkod]

Depending what software you are asking about.
The script can be run from live mode, in case the internet is working. For wired connections it works almost always.
So just download the script, run it, and post the content of the results file, included inside [ code ] text [ / code ] tags to make it readable better.

[biosol]

So far I have this info. Will try your script.

Device Boot Start End Blocks Id System
/dev/sda1 2048 28155903 14076928 27 Hidden NTFS WinRE
/dev/sda2 * 28155904 28360703 102400 7 HPFS/NTFS/exFAT
/dev/sda3 28360704 162578431 67108864 7 HPFS/NTFS/exFAT
/dev/sda4 162580478 976771071 407095297 f W95 Ext'd (LBA)
/dev/sda5 162580480 784179246 310799383+ 7 HPFS/NTFS/exFAT
/dev/sda6 960038912 976771071 8366080 82 Linux swap / Solaris
/dev/sda7 784181248 960036863 87927808 83 Linux

Partition table entries are not in disk order

[biosol]

Ok, I have the boot_into_script.sh in my Documents folder and it is the pwd. I tried running with ./boot_into_script.sh but get a permission denied. How do I run it?

[darkod]

You need sudo bash in front. If it's in Documents, it would be:

sudo bash ~/Documents/boot_info_script*.sh

[biosol]

Thanks.

ubuntu@ubuntu:~/Documents$ sudo bash ~/Documents/boot_info_script*.sh

boot_info_script version: 0.60 [17 May 2011]


"gawk" could not be found, using "busybox awk" instead.
This may lead to unreliable results.

Identifying MBRs...
Computing Partition Table of /dev/sda...
Searching sda1 for information...
Searching sda2 for information...
Searching sda3 for information...
Searching sda4 for information...
Searching sda5 for information...
Searching sda6 for information...
Searching sda7 for information...

Finished. The results are in the file "RESULTS.txt"
located in "/home/ubuntu/Documents/".

[biosol]

Sorry, here's the info. The forum turned some charaters into smile faces. I had to delete 2 of them to post.


Boot Info Script 0.60 from 17 May 2011


============================= Boot Info Summary: ===============================

=> Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of
the same hard drive for core.img. core.img is at this location and looks
for on this drive.

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: /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:
Boot files: /bootmgr /Boot/BCD

sda3: __________________________________________________ ________________________

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: /Windows/System32/winload.exe

sda4: __________________________________________________ ________________________

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

sda5: __________________________________________________ ________________________

File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: According to the info in the boot sector, sda5 starts
at sector 2048.
Operating System:
Boot files:

sda6: __________________________________________________ ________________________

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

sda7: __________________________________________________ ________________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 11.10
Boot files: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img

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

Drive: sda __________________________________________________ ___________________

Disk /dev/sda: 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 Sector End Sector # of Sectors Id System

/dev/sda1 2,048 28,155,903 28,153,856 27 Hidden NTFS (Recovery Environment)
/dev/sda2 * 28,155,904 28,360,703 204,800 7 NTFS / exFAT / HPFS
/dev/sda3 28,360,704 162,578,431 134,217,728 7 NTFS / exFAT / HPFS
/dev/sda4 162,580,478 976,771,071 814,190,594 f W95 Extended (LBA)
/dev/sda5 162,580,480 784,179,246 621,598,767 7 NTFS / exFAT / HPFS
/dev/sda6 960,038,912 976,771,071 16,732,160 82 Linux swap / Solaris
/dev/sda7 784,181,248 960,036,863 175,855,616 83 Linux


"blkid" output: __________________________________________________ ______________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/sda1 6CDE92DEDE929FBE ntfs Recovery
/dev/sda2 B098935C98932040 ntfs System Reserved
/dev/sda3 AE5E961D5E95DE81 ntfs
/dev/sda5 9C0699110698ED90 ntfs
/dev/sda6 7e6758d3-c246-4fc0-bbd4-a18db36ee430 swap
/dev/sda7 1c8179bb-2b3a-44b9-b345-8a99688f8154 ext4

================================ Mount points: =================================

Device Mount_Point Type Options

/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sr0 /cdrom iso9660 (ro,noatime)


=========================== sda7/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 video_bochs
insmod video_cirrus
}

insmod part_msdos
insmod ext2
set root='(hd0,msdos'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=auto
load_video
insmod gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
set locale_dir=($root)/boot/grub/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${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
if background_color 44,0,30; then
clear
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
if [ ${recordfail} != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu, with Linux 3.0.0-14-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
linux /boot/vmlinuz-3.0.0-14-generic root=UUID=1c8179bb-2b3a-44b9-b345-8a99688f8154 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-3.0.0-14-generic
}
menuentry 'Ubuntu, with Linux 3.0.0-14-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
echo 'Loading Linux 3.0.0-14-generic ...'
linux /boot/vmlinuz-3.0.0-14-generic root=UUID=1c8179bb-2b3a-44b9-b345-8a99688f8154 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.0.0-14-generic
}
submenu "Previous Linux versions" {
menuentry 'Ubuntu, with Linux 3.0.0-13-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
linux /boot/vmlinuz-3.0.0-13-generic root=UUID=1c8179bb-2b3a-44b9-b345-8a99688f8154 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-3.0.0-13-generic
}
menuentry 'Ubuntu, with Linux 3.0.0-13-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
echo 'Loading Linux 3.0.0-13-generic ...'
linux /boot/vmlinuz-3.0.0-13-generic root=UUID=1c8179bb-2b3a-44b9-b345-8a99688f8154 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.0.0-13-generic
}
menuentry 'Ubuntu, with Linux 3.0.0-12-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
set gfxpayload=$linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
linux /boot/vmlinuz-3.0.0-12-generic root=UUID=1c8179bb-2b3a-44b9-b345-8a99688f8154 ro quiet splash vt.handoff=7
initrd /boot/initrd.img-3.0.0-12-generic
}
menuentry 'Ubuntu, with Linux 3.0.0-12-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
echo 'Loading Linux 3.0.0-12-generic ...'
linux /boot/vmlinuz-3.0.0-12-generic root=UUID=1c8179bb-2b3a-44b9-b345-8a99688f8154 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.0.0-12-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,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set=root 1c8179bb-2b3a-44b9-b345-8a99688f8154
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows Recovery Environment (loader) (on /dev/sda1)" --class windows --class os {
insmod part_msdos
insmod ntfs
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 6CDE92DEDE929FBE
drivemap -s (hd0) ${root}
chainloader +1
}
menuentry "Windows 7 (loader) (on /dev/sda2)" --class windows --class os {
insmod part_msdos
insmod ntfs
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set=root B098935C98932040
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 ###
--------------------------------------------------------------------------------

=============================== sda7/etc/fstab: ================================

--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid' 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/sda8 during installation
UUID=1c8179bb-2b3a-44b9-b345-8a99688f8154 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda9 during installation
UUID=d6b71a9a-9563-44d5-8339-e4b534fa0b21 none swap sw 0 0
#
# To mount network drives

//10.4.1.126/users/rheppe /media/Y cifs credentials=/home/robert/.smbcredentials,workgroup=CUDANET,nounix,user,noex ec,noauto 0 0
//10.4.1.126/corp /media/Z cifs credentials=/home/robert/.smbcredentials,workgroup=CUDANET,nounix,user,noex ec,noauto 0 0

--------------------------------------------------------------------------------

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

GiB - GB File Fragment(s)

= boot/grub/core.img 1
= boot/grub/grub.cfg 1
= boot/initrd.img-3.0.0-12-generic 2
= boot/initrd.img-3.0.0-13-generic 1
= boot/initrd.img-3.0.0-14-generic 2
= boot/vmlinuz-3.0.0-12-generic 1
= boot/vmlinuz-3.0.0-13-generic 1
= boot/vmlinuz-3.0.0-14-generic 1
= vmlinuz 1
= vmlinuz.old 1

======================== Unknown MBRs/Boot Sectors/etc: ========================

Unknown BootLoader on sda4

00000000 ee ff 7e 7b c8 e2 1f 1a 9e 7a 1d 19 9b 06 ff ff |..~{.....z......|
00000010 ff 00 ff ff ff 00 11 0f c9 59 81 80 dd ff ef ee |.........Y......|
00000020 f9 ff eb eb f1 ff f2 f2 f9 ff f2 f2 f8 ff f0 f0 |................|
00000030 f7 ff 59 57 ab ff eb eb f5 ff e9 e9 f4 ff e9 e9 |..YW............|
00000040 f4 ff d5 d4 ee ff 7c 79 c5 e5 1c 19 9d 5c ff ff |......|y.....\..|
00000050 ff 00 10 0f d4 17 4f 4d d9 ed e1 e1 f4 ff f4 f4 |......OM........|
00000060 f9 ff 4d 4b af ff f4 f4 fa ff f5 f5 fa ff f3 f3 |..MK............|
00000070 f9 ff 48 46 a0 ff ef ef f7 ff 7d 7c bb ff 90 8f |..HF......}|....|
00000080 c1 ff e9 e9 f4 ff d8 d8 ef ff 4f 4d b4 df 1d 1a |..........OM....|
00000090 9d 1a 0f 0c db 57 a1 a0 ed ff f5 f5 fa ff f6 f6 |.....W..........|
000000a0 fa ff 22 1e bd ff 4c 49 bf ff 4e 4b b9 ff 89 87 |.."...LI..NK....|
000000b0 cc ff 4c 4b a9 ff c5 c5 d5 ff 81 80 bd ff 2f 2d |..LK........../-|
000000c0 9c ff ea ea f4 ff e9 e9 f4 ff 93 90 d4 de 1c 19 |................|
000000d0 9e 5d 0b 0a e0 a2 dd dc f6 ff f8 f8 fb ff f9 f9 |.]..............|
000000e0 fc ff 54 50 cc ff e4 e4 e6 ff ec ec ed ff f5 f5 |..TP............|
000000f0 f6 ff 50 4d bc ff e6 e6 e9 ff ed ec f1 ff 4a 49 |..PM..........JI|
00000100 a8 ff da da e4 ff e1 e1 eb ff c9 c8 eb ff 1c 19 |................|
00000110 a1 a9 0a 09 e9 e3 f7 f7 fc ff fb fb fd ff fc fc |................|
00000120 fe ff 55 50 cf ff e3 e3 e4 ff e5 e5 e6 ff ef ef |..UP............|
00000130 ef ff 4f 4c c5 ff e7 e7 e9 ff f0 ef f3 ff 4c 4b |..OL..........LK|
00000140 ac ff dd dd e5 ff e2 e2 ec ff e0 e0 ef ff 1b 18 |................|
00000150 a5 e7 07 06 ef e3 fa fa fd ff fe fe ff ff fe fe |................|
00000160 ff ff 26 22 c7 ff 51 4e c9 ff 52 4e ca ff 8f 8c |..&"..QN..RN....|
00000170 dc ff 54 50 cb ff eb eb ec ff f2 f2 f5 ff 4f 4d |..TP..........OM|
00000180 b0 ff e0 e0 e6 ff e4 e4 ec ff e2 e2 f1 ff 1b 19 |................|
00000190 a9 e7 05 05 f3 9e e8 e9 fd ff ff ff ff ff ff ff |................|
000001a0 ff ff 57 53 d3 ff e9 e9 e9 ff eb eb eb ff f4 f4 |..WS............|
000001b0 f4 ff 54 50 cc ff e9 e9 ea ff ed ed ef ff 00 fe |..TP............|
000001c0 ff ff 07 fe ff ff 02 00 00 00 2f d8 0c 25 00 fe |........../..%..|
000001d0 ff ff 05 fe ff ff 02 38 88 2f 00 58 ff 00 00 00 |.......8./.X....|
000001e0 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


=============================== StdErr Messages: ===============================

unlzma: Decoder error
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in

[darkod]

You need to open the results.txt and post the content here. The results are inside the file.

After you paste the text, while still selected, try hitting the # button above, in the toolbar when creating the post. It will make the code tags for you.

[darkod]

It looks fine, except the info that sda5 seems to start at 2048 according to the information in the boot sector.

Lets try the easy way first, reinstalling grub2. Boot into live mode and in terminal execute:


sudo mount /dev/sda7 /mnt
sudo grub-install --root-directory=/mnt /dev/sda

Reboot and see if that helped.

[biosol]

Ok, updated. I guess doing that would have removed the smile faces. I did delete two out so let me know if I should repost the info.

[biosol]

ubuntu@ubuntu:~$ sudo mount /dev/sda7 /mnt
ubuntu@ubuntu:~$ sudo grub-install --root-directory=/mnt /dev/sda
Installation finished. No error reported.

[darkod]

ubuntu@ubuntu:~$ sudo mount /dev/sda7 /mnt
ubuntu@ubuntu:~$ sudo grub-install --root-directory=/mnt /dev/sda
Installation finished. No error reported.

? Did you reboot the computer? Still the same grub error?

[biosol]

It worked!! Thanks so much.

Both OS's booting normally.

When I deleted the other two swap partitions they were sda 8 and 9. Maybe I should have deleted sda 7 and 8 as 9 might have been from the latest install?

I will change this to resolved in hopes it helps others.

[darkod]

Glad it worked. Enjoy it. :)