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Old 03-26-2006, 11:20 PM   #1
cyu021
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Registered: Oct 2004
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Is it possible to install grub in windows ?


Hi folks,

I am running a dual-boot system (windows and linux/suse10 community) and current find myself need to recover my windows partition with the recovery CDs. I am fully aware of that grub will be eraced from mbr by this recovery action, but I have absolutely no idea how to install grub from a windows based system.

Could someone kindly teach me how to get it done or at least point me a direction?
In addition, telling me how to jump to "install grub" step like in fedora or debian would also be helpful.

Cheers,
James
 
Old 03-27-2006, 12:55 AM   #2
firstfire
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Registered: Mar 2006
Location: Ekaterinburg, Russia
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If you have a floppy drive, then you have no problems -- create GRUB boot floppy.
See `info grub' -> installing. Here is a short extraction from there (section `Creating a GRUB boot floppy'):

# cd /usr/share/grub/i386-pc
# dd if=stage1 of=/dev/fd0 bs=512 count=1
1+0 records in
1+0 records out
# dd if=stage2 of=/dev/fd0 bs=512 seek=1
153+1 records in
153+1 records out

Once you've boot from a GRUB floppy, run command like `setup (hd0)' if you want
to install GRUB on the MBR in the first drive [i.e. hda]. To install GRUB into the "boot sector" of a partition instead of the MASTER Boot Sector, specify a partition into which you want to install GRUB: `setup (hd0,0)'. If this doesn't work, try to look for 'stages' on your hd. For example:
grub> find /boot/grub/stage1
This will search for the file name `/boot/grub/stage1' and show the devices which contain the file.
grub> root (hd0,0)
Set GRUB's root device (change hd0,.. to result of prev. command)
grub> setup (hd0)
--install GRUB.

P.S. Before doing all this see file `/boot/grub/menu.lst'
Good luck!
 
Old 03-27-2006, 01:03 AM   #3
basileus
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Registered: Nov 2004
Location: Turku, Finland
Distribution: Debian, Ubuntu, Gentoo
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Actually you have no reason to use Windows to reinstall grub. Download a Live-CD (like Knoppix) and use it.

I've done similar restoration a couple of time and here's roughly how it goes:

1. Boot the LiveCD

2. Change yourself to "root" (with "su")

3. Make a temporary directory to the root dir "/", for example "/suseroot"

4. Mount your Suse's root partition, "/", to this partition. You can do it with "mount -t auto /dev/hdX /suseroot". Replace "X" with your partition number. If you have SATA or SCSI drive the replace the whole "hdX" with appropriate device name. This example is for IDE drives.

Check /etc/fstab in you working Suse installation if you can't remember what your physical partition your root partition uses.

5. Issue "chroot /suseroot". Now you should be logged into your Suse's enviroment where you can install Grub. If you have a different "/boot" -partition, then mount it now, not before.

6. Install grub. Check "man grub" for more info, it's been I while since I did this myself.

Tell me if you run into any troubles.
 
Old 03-27-2006, 01:05 AM   #4
b0nd
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Registered: Jan 2005
Distribution: Slackware, BackTrack, Windows XP
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hi,
don't worry if your windows boot loader erase grub from MBR.
you can retrive that that through the following steps:

http://www.gnulinuxclub.org/index.ph...=170&Itemid=31

regards
 
  


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