[ltp] Help Needed

skipper linux-thinkpad@linux-thinkpad.org
Thu, 22 Nov 2007 20:16:19 +0200


Hi U,

All's well in the MBR - it's just the menue list in boot/grub that's 
screwed (by me)!

Regards,

David

U Kuehn wrote:
> Hi David,
>
> skipper wrote:
>   
>> Chopped off the contents ..................... I screwed up my grub
>> menu.lst file in /boot/grub - this is after getting Linspire up and
>> running on a fresh install - BUT I killed it on going to CNR which after
>> installing an update of the CNR programme killed my keyboard, mouse,
>> nic. Oh well UBUNTU here I come!
>>
>> What I need to do is create a bootable linux floppy - that will read my
>> hard disk - I then need to have a very small editor on it so I can edit
>> my menu.lst file. I downloaded debian and created two floppies - ash and
>> nano could not access (mount) hard disk. I have also got a grub boot
>> floppy but there's nothing to edit menu.lst with ........................
>>
>> So, is it possible to create a bootable linux floppy via dos with an
>> editor? If so how?
>>
>>     
> It is actually much easier than this: take any linux live cd, like
> knoppix, boot it, mount the partition and edit the file. Did this a lot
> of times with good success.
>
> Further, in case you also damaged your mbr, the following will help to
> install grub again into the MBR:
> mount the root partition, say, as /newroot (possibly after creating the
> mount point). Then mount the boot partition (if you have one) under
> /newroot/boot, same with the usr partition. Then copy the contents of
> /dev to /newroot/dev.
> Do a chroot /newroot, followed by a mount /proc and mount /sys.
> Then run your grub installer like normal. Reboot, and the system shall
> be alive again.
>
> However, one word of warning: While I succeeded with this several times,
> I certainly cannot guarantee success. Fiddling with the mbr is always a
>  bit risky.
>
> Better have a tested backup of your data ready.
>
> I hope this helps, and good luck!
>
> U.
>