Hi friends,

I have window XP and redhat9 on the same hard disk. i tried to upgrade redhat9 to FC3, but failed. i restart the system, it give message no operating system found. i restart system from bootable cd, message appears

press any key to boot from cd.....(after few minutes) gurb stage2

and same grub screen appears. After system runs both os very well.

i think there is problem for gurb to boot from mbr.

what should i do to reinstall gurb on the mbr with the same configration.

Reboot off of the FC3 CD, and at the boot prompt, type this:

linux rescue

It will ask you a few questions, answer them appropriately (answer yes if it asks u to mount your currently installed system). It will then tell you how to chroot into your installed system....do this. It should be this command:

chroot /mnt/sysimage

Then run the command:

grub-install /dev/hda

Then reboot and all should be well

The configuration should be the same since the grub config file won't be changed during this process.

Let me know if it works. It did for me on CentOS 4...which is very similar to FC3.

i used this trick with redhat9 and FC3.
but system gave message "command not found".

then i reinstall the window Xp, agin no os found message. i restart system with bootable cd and run window xp. i used window boot option by placing linux.bin file into 'C' partition.

i restart the computer from bootable cd and choosed linux on window boot option, the pink screen appeared.

plz help me what should i do to recover redhat9 without reinstalling.

thanks in advance

Use a live CD and chroot into your environment. If the rescue CD doesn't do this for you (and it should) you will need to tell it to (or use a different live CD, such as knoppix).

You will be required to know about your partitions. You can find some of this information by the command "fdisk -l". Identify where your Windows partition is, your "/" partition, and your "/boot" partition (if it is different than your "/" partition. In most cases it isn't).

You can see which partitions are mounted where by using the command "mount" on it's own. Once you have located where your "/" partition is currently mounted, go to that location. If it is not mounted, then mount it and go there.

Then type:
mount --bind /dev ./dev
mount --bind /proc ./proc
chroot .

From here, it will probably be a simple matter of:
grub-install /dev/hda

There may be complications in this procedure. If you have a separate /boot partition, you will likely need to mount it (I think you can do this after you chroot with "mount /boot", but you might need to mount it before, or something). Of course, the biggest complication is the thing that I happen to be forgetting

Above all, good luck, and post back.

Hi friends,

thank u very much of helping me. i fixed the problem finally as per your suggestions.

linux rescue

chroot /mnt/sysimage

grub-install --recheck /dev/hdc


reboot

gurb screen appears with same configartion.

thanx again.