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12-31-2008, 02:44 PM
#1
LQ Newbie
Registered: Dec 2008
Posts: 2
Rep:
Can't access Windows. Weird, weird grub issue.
,
I wanted to have gfx-grub, so therefore I followed these instructions (which are currently the up-to-date ones. The first message isn't up-to date):
http://ubuntuforums.org/showthread.php?t=208855&page=66
Quote:
Originally Posted by
ryukent
..
sudo grub
grub> find /boot/grub/stage1
(hdx,y) # this will be the output
grub> root (hdx,y)
grub> setup (hdx)
Obviously you need to change the X and Ys.
sudo grub-install /dev/sdaX
This was very important. Didn't work without it. Note the X is not the same number as the x or y in the previous section as grub uses different numbers. You need to look up the correct hard disk to use. It should be the one are booting to.
...
So I did all the other things, but at that part I accidentally selected Windows C: partition at
sudo grub: grub> root
and sudo grub-install /dev/sda!
So how do I undo the changes?
- currently I can't boot to Windows (Vista)
ps. I need to fix this as quick as possible:
Thanks forehand for the helpers! Thank you really much!
12-31-2008, 03:11 PM
#2
LQ Newbie
Registered: Dec 2008
Posts: 2
Original Poster
Rep:
Bump! Anyone
?
I did this:
Code:
cd ~/Desktop && wget 'http://home.comcast.net/~ubuntu_grub/boot_info_script.txt' && sudo bash boot_info_script.txt
Code:
============================= Boot Info Summary: ==============================
=> Grub is installed in the MBR of /dev/sda and looks on the same drive in
partition #3 for its boot files.
sda1: _________________________________________________________________________
File system:
Boot sector type: Grub
Mounting failed:
mount: you must specify the filesystem type
sda2: _________________________________________________________________________
File system:
Boot sector type: Grub
Mounting failed:
mount: you must specify the filesystem type
sda3: _________________________________________________________________________
File system: ext3
Boot sector type: No Boot Loader
Boot sector info:
Operating System: Ubuntu 8.10
Boot files/dirs: /boot/grub/menu.lst /etc/fstab /boot /boot/grub
sda4: _________________________________________________________________________
File system: Extended Partition
sda5: _________________________________________________________________________
File system: ext3
Boot sector type: No Boot Loader
Boot sector info:
Operating System:
Boot files/dirs:
=========================== Drive/Partition Info: =============================
Drive sda: _____________________________________________________________________
fdisk -lu /dev/sda:
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x3ffb046e
Device Boot Start End Blocks Id System
/dev/sda1 63 181984319 90992128+ 7 HPFS/NTFS
/dev/sda2 * 299162430 312576704 6707137+ 7 HPFS/NTFS
/dev/sda3 181984320 221247179 19631430 83 Linux
/dev/sda4 221247180 299162429 38957625 5 Extended
/dev/sda5 221247243 299162429 38957593+ 83 Linux
Partition table entries are not in disk order
sfdisk -V /dev/sda:
/dev/sda: OK
blkid -c /dev/null: ____________________________________________________________
/dev/sda3: UUID="dcfa8068-b3a8-4645-bfcf-cc8dcffedac8" TYPE="ext3"
/dev/sda5: UUID="16a57d37-35a7-41b6-bf8f-bc376b65311e" TYPE="ext3"
=============================== "mount" output: ===============================
/dev/sda3 on / type ext3 (rw,relatime,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
/proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,nosuid,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
lrm on /lib/modules/2.6.27-9-generic/volatile type tmpfs (rw,mode=755)
/dev/sda5 on /home type ext3 (rw,relatime)
securityfs on /sys/kernel/security type securityfs (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/linuxpro/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=linuxpro)
=========================== sda3/boot/grub/menu.lst: ===========================
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
.................
................
## can be true or false
# savedefault=false
## ## End Default Options ##
title Ubuntu 8.10, kernel 2.6.27-11-generic
root (hd0,2)
kernel /boot/vmlinuz-2.6.27-11-generic root=UUID=dcfa8068-b3a8-4645-bfcf-cc8dcffedac8 ro quiet splash
initrd /boot/initrd.img-2.6.27-11-generic
quiet
title Ubuntu 8.10, kernel 2.6.27-11-generic (recovery mode)
root (hd0,2)
kernel /boot/vmlinuz-2.6.27-11-generic root=UUID=dcfa8068-b3a8-4645-bfcf-cc8dcffedac8 ro single
initrd /boot/initrd.img-2.6.27-11-generic
title Ubuntu 8.10, kernel 2.6.27-9-generic
root (hd0,2)
kernel /boot/vmlinuz-2.6.27-9-generic root=UUID=dcfa8068-b3a8-4645-bfcf-cc8dcffedac8 ro quiet splash
initrd /boot/initrd.img-2.6.27-9-generic
quiet
title Ubuntu 8.10, kernel 2.6.27-9-generic (recovery mode)
root (hd0,2)
kernel /boot/vmlinuz-2.6.27-9-generic root=UUID=dcfa8068-b3a8-4645-bfcf-cc8dcffedac8 ro single
initrd /boot/initrd.img-2.6.27-9-generic
title Ubuntu 8.10, memtest86+
root (hd0,2)
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
# This is a divider, added to separate the menu items below from the Debian
# ones.
title Other operating systems:
root
# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title Windows Vista/Longhorn (loader)
root (hd0,0)
savedefault
makeactive
chainloader +1
# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda2
title Windows Vista/Longhorn (loader)
root (hd0,1)
savedefault
makeactive
chainloader +1
=============================== sda3/etc/fstab: ===============================
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda3
UUID=dcfa8068-b3a8-4645-bfcf-cc8dcffedac8 / ext3 relatime,errors=remount-ro 0 1
# /dev/sda5
UUID=16a57d37-35a7-41b6-bf8f-bc376b65311e /home ext3 relatime 0 2
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
================================== sda3/boot: ==================================
total 24640
drwxr-xr-x 3 root root 4096 2008-12-29 10:26 .
drwxr-xr-x 20 root root 4096 2008-12-29 19:27 ..
-rw-r--r-- 1 root root 508385 2008-12-19 19:57 abi-2.6.27-11-generic
-rw-r--r-- 1 root root 507665 2008-11-21 01:46 abi-2.6.27-9-generic
-rw-r--r-- 1 root root 91358 2008-12-19 19:57 config-2.6.27-11-generic
-rw-r--r-- 1 root root 91364 2008-11-21 01:46 config-2.6.27-9-generic
drwxr-xr-x 3 root root 4096 2008-12-31 21:50 grub
-rw-r--r-- 1 root root 8621630 2008-12-24 18:09 initrd.img-2.6.27-11-generic
-rw-r--r-- 1 root root 8619552 2008-12-15 14:31 initrd.img-2.6.27-9-generic
-rw-r--r-- 1 root root 124152 2008-09-11 23:11 memtest86+.bin
-rw-r--r-- 1 root root 1031799 2008-12-19 19:57 System.map-2.6.27-11-generic
-rw-r--r-- 1 root root 1029585 2008-11-21 01:46 System.map-2.6.27-9-generic
-rw-r--r-- 1 root root 1074 2008-12-19 19:58 vmcoreinfo-2.6.27-11-generic
-rw-r--r-- 1 root root 1073 2008-11-21 01:48 vmcoreinfo-2.6.27-9-generic
-rw-r--r-- 1 root root 2248912 2008-12-19 19:57 vmlinuz-2.6.27-11-generic
-rw-r--r-- 1 root root 2244304 2008-11-21 01:46 vmlinuz-2.6.27-9-generic
=============================== sda3/boot/grub: ===============================
total 252
drwxr-xr-x 3 root root 4096 2008-12-31 21:50 .
drwxr-xr-x 3 root root 4096 2008-12-29 10:26 ..
-rw-r--r-- 1 root root 197 2008-12-31 21:35 default
-rw-r--r-- 1 root root 15 2008-10-04 23:10 device.map
-rw-r--r-- 1 root root 8108 2008-12-31 21:35 e2fs_stage1_5
-rw-r--r-- 1 root root 7856 2008-12-31 21:35 fat_stage1_5
-rw-r--r-- 1 root root 16 2008-12-31 21:35 installed-version
-rw-r--r-- 1 root root 8712 2008-12-31 21:35 jfs_stage1_5
-rw-r--r-- 1 root root 5012 2008-10-04 18:30 menu (copy).lst
-rw-r--r-- 1 root root 5117 2008-12-31 21:50 menu.lst
-rw-r--r-- 1 root root 5143 2008-12-31 21:50 menu.lst~
-rw-r--r-- 1 root root 5259 2008-12-31 21:25 menu.lst.backup
-rw-r--r-- 1 root root 5259 2008-12-31 21:20 menu.lst.backup~
-rw-r--r-- 1 root root 7352 2008-12-31 21:35 minix_stage1_5
-rw-r--r-- 1 root root 9756 2008-12-31 21:35 reiserfs_stage1_5
drwxr-xr-x 2 root root 4096 2008-11-13 14:04 splashimages
-rw-r--r-- 1 root root 512 2008-12-31 21:35 stage1
-rw-r--r-- 1 root root 121460 2008-12-31 21:35 stage2
-rw-r--r-- 1 root root 9556 2008-12-31 21:35 xfs_stage1_5
=============================== StdErr Messages: ===============================
/dev/sda1: unknown volume type
/dev/sda2: unknown volume type
Last edited by MightyHard; 12-31-2008 at 03:28 PM .
Reason: made this less space taking
12-31-2008, 04:35 PM
#3
Senior Member
Registered: Jan 2008
Distribution: Arch/Manjaro, might try Slackware again
Posts: 1,851
To undo your damage to /dev/sda you'll need to reinstall the Windows boot sector. Don't know about Vista, but with XP, you put in the install CD, get to the "rescue" part and use fixmbr. You didn't by any chance save the bootsector first with dd?
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