[lug] Grub question

Kenneth D. Weinert kenw at quarter-flash.com
Fri Nov 10 17:58:08 MST 2006

Lee Woodworth wrote:
> Ken Weinert wrote:
>> Lee Woodworth wrote:
>>> Ken Weinert wrote:
>>>> Well, I'm not sure how I did it, or what exactly I did, but grub is sort
>>>> of non-working right now.
>>> When this has happened to me, reinstalling grub on the boot drive
>>> has fixed things.
>>> (I have a /boot partition on hda1, system is on hda2, grub boot sector
>>> on hda)
>>> # grub
>>> root (hd0,0)
>>> setup (hd0)
>>> quit
>> I'll give that a try when I get home tonight and let you know if that
>> fixes it. If not I'll post up the info the other responder asked about
>> for further discussion.
>> Any ideas on can cause this temporary insanity?
>> And no, I've not added/deleted drives or partitions, just compiled up a
>> new kernel and tried to add it to the boot menu. Yes, that implies that
>> I messed up the boot menu somehow, but I've not yet seen it and I didn't
>> keep a copy of what it looked like before (why should I? what could go
>> wrong? :)
> This has happened to me when I changed /boot/grub/grub.conf to add a new
> kernel line. I suspect that grub.conf moved to a different set of blocks
> when the file was rewritten.  It appears the early boot stage has the
> config file location hard-coded as  block addresses so it didn't know
> where the config was anymore. The grub setup command looks for the grub
> boot code and could be calculating block addresses that it inserts into
> the early stage boot loader.

Yes, I had added a new kernel line before this madness started. The good
news is that re-running grub as said before restored it to a working

Thanks to all for the assistance - it's much appreciated.

Ken Weinert

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