Unable to edit grub.

basheer · 10-20-2009, 12:32 AM

How do i re install grub. It's got corrupted. Whenever i try to load ubuntu9.04 it says file not found. What do i do?

eco · 10-20-2009, 02:19 AM

You are going to have to give us a bit more to work on.

The easiest might just be to boot of a live CD and then chroot into your old system to see if all is well. If it's not, you can simply reinstall in the chrooted environment.

vibinlakshman · 10-21-2009, 08:50 PM

Quote:

Originally Posted by basheer

How do i re install grub. It's got corrupted. Whenever i try to load ubuntu9.04 it says file not found. What do i do?

https://help.ubuntu.com/community/LiveCdRecovery

linus72 · 10-21-2009, 09:33 PM

The answer to your question is that grub cannot find your kernel or initrd.img

did you do an update and then this happened or how/when did this happen?

look in your /boot folder and see what vmlinuz and initrd.img are the newest
and edit your /boot/grub/menu.lst to reflect this

also, make sure the symlinks exist in / for vmlinuz and initrd.img

pixellany · 10-22-2009, 03:15 AM

Quote:

Originally Posted by linus72

The answer to your question is that grub cannot find your kernel or initrd.img

did you do an update and then this happened or how/when did this happen?

look in your /boot folder and see what vmlinuz and initrd.img are the newest
and edit your /boot/grub/menu.lst to reflect this

also, make sure the symlinks exist in / for vmlinuz and initrd.img

Why would you need links in "/"? I have NEVER done this.

the kernel and initrd files (or links) have to be where menu.lst is telling grub to look---this is normally in /boot

But I thought the original question was re-installing grub.......

linus72 · 10-22-2009, 04:38 AM

I was speaking of the symlinks to kernel/initrd found in the / root of the filesystem
most/all distros have these

pixellany · 10-22-2009, 05:22 AM

Quote:

Originally Posted by linus72

I was speaking of the symlinks to kernel/initrd found in the / root of the filesystem
most/all distros have these

I HAVE seen this but, in my experience, most distros do not do this. More to the point, it serves no purpose. The only thing that matters is that the files (or links) must exist where GRUB is told to look. I have never seen this to be anything but /boot.

Getting back to the original question, I still think OP simply needs to re-install GRUB. While waiting for OP to return, I'm going to go solve some other problem.......

basheer · 10-22-2009, 09:42 AM

thanx a lot linus72, eco , pixellany and all the guys who took tim to help me out.
I could not reinstall grub even after chrooting. It was giving some error messages like, not a block device, format not known etc.

So I just re-installed ubuntu.
Thanx a lot again.