Solutions are posted many times here on grub2, but sometimes the issues is unique, so we like to see the boot info script.
Boot Info Script courtesy of forum member meierfra
Page with instructions and download:
http://bootinfoscript.sourceforge.net/
Paste results.txt, then highlight entire file and click on # in edit panel(code tags) to make it easier to read.
Or You can generate the tags first by pressing the # icon in the post's menu and then paste the contents between the generated [ code] paste here [ /code] tags.
See also all the links in drs305's signature line.
Grub Rescue Prompt Megathread - drs305
http://ubuntuforums.org/showthread.php?t=1594052
chroot & grub uninstall & reinstall -drs305
http://ubuntuforums.org/showthread.php?t=1581099
How to restore the Ubuntu/XP/Vista/7 bootloader (Updated for Ubuntu 9.10)
http://ubuntuforums.org/showthread.php?t=1014708
https://help.ubuntu.com/community/Grub2#Reinstalling%20GRUB%202
thank you for the superbe reply. i got the boot info script right here.
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 #1 for (,msdos1)/boot/grub.
=> No boot loader is installed in the MBR of /dev/sdb
sda1: __________________________________________________ _______________________
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
sda2: __________________________________________________ _______________________
File system: Extended Partition
Boot sector type: Unknown
Boot sector info:
sda5: __________________________________________________ _______________________
File system: swap
Boot sector type: -
Boot sector info:
sdb1: __________________________________________________ _______________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 10.10
Boot files/dirs: /etc/fstab
sdb2: __________________________________________________ _______________________
File system: Extended Partition
Boot sector type: Unknown
Boot sector info:
sdb5: __________________________________________________ _______________________
File system: swap
Boot sector type: -
Boot sector info:
=========================== Drive/Partition Info: =============================
Drive: sda ___________________ __________________________________________________ ___
Disk /dev/sda: 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/sda1 2,048 612,853,759 612,851,712 83 Linux
/dev/sda2 612,855,806 625,141,759 12,285,954 5 Extended
/dev/sda5 612,855,808 625,141,759 12,285,952 82 Linux swap / Solaris
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 2,048 964,485,119 964,483,072 83 Linux
/dev/sdb2 964,487,166 976,771,071 12,283,906 5 Extended
/dev/sdb5 964,487,168 976,771,071 12,283,904 82 Linux swap / Solaris
blkid -c /dev/null: __________________________________________________ __________
Device UUID TYPE LABEL
/dev/loop0 squashfs
/dev/sda1 9da1fea9-a012-46b7-b7a9-403318f60012 ext4
/dev/sda2: PTTYPE="dos"
/dev/sda5 f5eab16b-c389-4c04-b246-13ab514bb333 swap
/dev/sda: PTTYPE="dos"
/dev/sdb1 03cb871f-0ba2-45bf-a5b7-692c669d5f7e ext4
/dev/sdb2: PTTYPE="dos"
/dev/sdb5 edcb8c11-3747-4358-b875-b7a5ee7ea1dc swap
/dev/sdb: PTTYPE="dos"
============================ "mount | grep ^/dev output: ===========================
Device Mount_Point Type Options
aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (ro,noatime)
/dev/loop0 /rofs squashfs (ro,noatime)
=========================== sda1/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 "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
}
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 9da1fea9-a012-46b7-b7a9-403318f60012
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 9da1fea9-a012-46b7-b7a9-403318f60012
set locale_dir=($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 2.6.35-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 9da1fea9-a012-46b7-b7a9-403318f60012
linux /boot/vmlinuz-2.6.35-22-generic root=UUID=9da1fea9-a012-46b7-b7a9-403318f60012 ro quiet splash
initrd /boot/initrd.img-2.6.35-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.35-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 9da1fea9-a012-46b7-b7a9-403318f60012
echo 'Loading Linux 2.6.35-22-generic ...'
linux /boot/vmlinuz-2.6.35-22-generic root=UUID=9da1fea9-a012-46b7-b7a9-403318f60012 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.35-22-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,msdos1)'
search --no-floppy --fs-uuid --set 9da1fea9-a012-46b7-b7a9-403318f60012
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 9da1fea9-a012-46b7-b7a9-403318f60012
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Ubuntu 10.10 (10.10) (on /dev/sdb1)" {
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 03cb871f-0ba2-45bf-a5b7-692c669d5f7e
linux /boot/vmlinuz-2.6.35-22-generic root=/dev/sdb1
}
### 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 ###
=============================== sda1/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/sda1 during installation
UUID=9da1fea9-a012-46b7-b7a9-403318f60012 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda5 during installation
UUID=f5eab16b-c389-4c04-b246-13ab514bb333 none swap sw 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
=================== sda1: Location of files loaded by Grub: ===================
272.8GB: boot/grub/core.img
19.4GB: boot/grub/grub.cfg
.8GB: boot/initrd.img-2.6.35-22-generic
.4GB: boot/vmlinuz-2.6.35-22-generic
.8GB: initrd.img
.4GB: vmlinuz
=============================== 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=03cb871f-0ba2-45bf-a5b7-692c669d5f7e / ext4 errors=remount-ro 0 1
# swap was on /dev/sdb5 during installation
UUID=edcb8c11-3747-4358-b875-b7a5ee7ea1dc none swap sw 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
=================== sdb1: Location of files loaded by Grub: ===================
.2GB: boot/vmlinuz-2.6.35-22-generic
.2GB: vmlinuz
=========================== Unknown MBRs/Boot Sectors/etc =======================
Unknown BootLoader on sda2
00000000 5e e3 08 df 19 49 0c 24 12 bd e3 e7 99 47 31 88 |^....I.$.....G1.|
00000010 ca a5 45 4a 3c 29 45 94 75 fc 80 7b 64 13 a7 03 |..EJ<)E.u..{d...|
00000020 fa 24 73 9e 66 82 b4 0e 4d ef df cc 1b 11 01 7c |.$s.f...M......||
00000030 60 7d ea 85 73 47 d8 75 2d d3 27 04 7b 0b c0 1e |`}..sG.u-.'.{...|
00000040 8f ed 0c 32 98 e8 54 ac 28 8a 96 d4 f2 4b 68 23 |...2..T.(....Kh#|
00000050 b4 8b 2c b9 af 66 0c b2 89 1f 7d e7 ad cf 8b 17 |..,..f....}.....|
00000060 82 36 ba 30 c8 56 81 c1 71 7d c0 fe a3 61 e8 12 |.6.0.V..q}...a..|
00000070 d9 9f 73 d8 bb ec c4 4c ca 3b 19 4e de 6e 77 92 |..s....L.;.N.nw.|
00000080 f8 8d 66 9e b3 43 0e 47 f5 5f 46 b9 4b 4c e5 88 |..f..C.G._F.KL..|
00000090 53 c6 f7 b5 ab b2 5a 50 40 aa f3 05 8a 77 fa 72 |S.....ZP@....w.r|
000000a0 0f 42 16 d3 61 d9 05 55 2d 9d 08 23 20 2b d0 1b |.B..a..U-..# +..|
000000b0 48 d1 5c 44 39 8b 08 b8 c0 6b 7f 8c 86 be 60 60 |H.\D9....k....``|
000000c0 c1 94 d3 db 3a 8a c5 c1 02 53 32 22 04 35 a0 9d |....:....S2".5..|
000000d0 7f b6 84 05 6f d8 ca 18 93 27 d2 fb de d9 61 b8 |....o....'....a.|
000000e0 de 76 19 a0 fc 64 dc 21 3e 85 bf 52 e2 74 ba 77 |.v...d.!>..R.t.w|
000000f0 4a 41 66 2b 20 5c 47 6c 56 a1 bc 32 c8 48 2c 04 |JAf+ \GlV..2.H,.|
00000100 c2 06 ae c8 79 45 71 4e ed 68 18 ac f5 5e 3a 37 |....yEqN.h...^:7|
00000110 b2 ae b7 d2 93 4f 84 b9 d1 d0 2f bf a5 6b 1c 9f |.....O..../..k..|
00000120 fb 0c 41 41 22 f5 65 a3 94 93 e7 98 14 0b df 7a |..AA".e........z|
00000130 e1 b8 ff 01 e6 dc c0 27 9e 1d c3 30 64 8f 22 4e |.......'...0d."N|
00000140 b7 a4 86 a2 73 e0 3e 9b f2 fa cd 8a 7a e5 87 8d |....s.>.....z...|
00000150 75 6d 69 33 a5 00 5c 2d e2 86 95 de 17 02 19 47 |umi3..\-.......G|
00000160 52 5e b4 ee d4 b2 c2 62 19 24 b7 5a 99 3e d8 52 |R^.....b.$.Z.>.R|
00000170 80 f4 8d c4 55 1d 1f da 73 ce d0 1d dd 4b 6f 61 |....U...s....Koa|
00000180 9c db d1 90 c3 67 d1 02 60 20 0b 43 ed 8a 14 e4 |.....g..` .C....|
00000190 69 c8 b3 6a d5 1d 7d 3d 17 e3 20 ee d6 28 bc c0 |i..j..}=.. ..(..|
000001a0 9e 96 26 b1 bb f2 21 11 fa 4b ef 36 f5 01 1b 43 |..&...!..K.6...C|
000001b0 5a 28 2c e0 e3 68 6c 77 73 0a 08 69 cf a3 00 fe |Z(,..hlws..i....|
000001c0 ff ff 82 fe ff ff 02 00 00 00 00 78 bb 00 00 00 |...........x....|
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
Unknown BootLoader on sdb2
00000000 55 e0 55 b7 ce ec f6 b0 db 7c a4 c5 58 65 58 87 |U.U......|..XeX.|
00000010 dc 46 71 47 00 ed 45 21 0e 07 cb 49 49 df 7e 82 |.FqG..E!...II.~.|
00000020 6b 66 63 eb 97 86 de d2 56 da 41 23 68 27 f9 d7 |kfc.....V.A#h'..|
00000030 95 5c 28 f2 8f 98 40 db 8d a7 d7 d4 9a f4 70 90 |.\(...@.......p.|
00000040 71 83 ef 73 92 bb 4a 56 39 79 ee 47 9d ea 0f 43 |q..s..JV9y.G...C|
00000050 ef 4d 89 a4 32 30 60 08 1c 66 bb 5d ec 72 ea 5f |.M..20`..f.].r._|
00000060 90 87 50 49 04 f6 c7 b5 7b 07 85 2f 5a 7b 24 04 |..PI....{../Z{$.|
00000070 93 b3 e5 38 ae 5c 4c 6f 05 6d d1 b5 29 5a 47 52 |...8.\Lo.m..)ZGR|
00000080 b1 20 0c c8 32 15 8e 30 7a 52 98 14 f2 42 93 90 |. ..2..0zR...B..|
00000090 78 3d 0f 5a f3 12 5a d8 ef 8c 53 bb 64 41 59 9d |x=.Z..Z...S.dAY.|
000000a0 83 29 2c 7d fa 57 9f f8 a6 24 17 11 87 c8 04 71 |.),}.W...$.....q|
000000b0 8f 5a d7 0d ee d4 4d f7 32 ac bf 77 a1 ca df d9 |.Z....M.2..w....|
000000c0 aa 2b 8f 31 18 11 d1 6b 93 03 e5 da b9 3f 30 e7 |.+.1...k.....?0.|
000000d0 d6 bd a6 d3 d5 1c 1b 1a 46 10 63 da bd 46 4d 36 |........F.c..FM6|
000000e0 15 63 85 39 ce 39 a2 4a d6 05 b9 03 2a f9 84 0c |.c.9.9.J....*...|
000000f0 90 1b 8a d0 b7 21 18 70 3a f0 4d 39 21 33 dd d2 |.....!.p:.M9!3..|
00000100 d8 0c 32 8c 31 01 ba 91 d4 77 ab 22 2d ea ad 93 |..2.1....w."-...|
00000110 8e e0 1e 95 e1 4a 1c d1 b4 b4 b1 e8 38 ae 83 91 |.....J......8...|
00000120 51 40 54 3d 0f 04 f7 34 86 32 ec 48 00 f4 ac 93 |Q@T=...4.2.H....|
00000130 4e cb d4 69 f5 02 a3 19 6d d9 1e 9d e9 db 37 0c |N..i....m.....7.|
00000140 f9 78 00 f4 27 a5 38 a4 e3 6d 49 7a a6 2b 44 c0 |.x..'.8..mIz.+D.|
00000150 6c 27 e9 c7 41 9a 7f d9 c0 45 0d c9 07 19 cd 57 |l'..A....E.....W|
00000160 2a 72 d1 db 40 5b 21 a5 00 3c 33 2b 03 80 08 e0 |*r..@[!..<3+....|
00000170 54 c9 10 55 e9 82 49 04 7a fd 6a 63 f1 3b f4 2e |T..U..I.z.jc.;..|
00000180 fa 3b 8d 10 03 eb 93 ce 29 3e ce c7 27 0e c3 a7 |.;......)>..'...|
00000190 02 ae 29 59 a4 c3 47 1d 8b 31 da 5c b6 0f 90 e3 |..)Y..G..1.\....|
000001a0 23 1c 71 4b fd 9d 31 3c 47 2b 72 7a ff 00 11 a7 |#.qK..1<G+rz....|
000001b0 cd 6d fa 22 a2 ae f5 1c fa 35 c1 db b9 76 00 fe |.m.".....5...v..|
000001c0 ff ff 82 fe ff ff 02 00 00 00 00 70 bb 00 00 00 |...........p....|
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
as i\ve said, i\ve tried the wiki, and it didn\t work, and i have tried chroot & grub uninstall & reinstall -drs305, but i will try that again, incase i was abit to hasty.
keep me updated if you find something interesting in the boot info script