On 06/28/2012 10:14 PM, Paul Hartman wrote:
> After booting from gentoo minimal livecd, chrooting into my hard
> drive, re-emerging grub:0 (just in case it has to be built against my
> latest kernel) and then running grub and doing:
> root (hd0,0)
> setup (hd0)
> it booted normally again. I guess I failed to reinstall grub like this
> after a portage update at some point... logs show I last instlaled it
> in May, and have rebooted since then without problem, maybe it was
> something else. Weird.
Just for future reference, the grub command line mode will let you
change all kinds of things that will make it possible for you to
boot from such a situation with very little effort.
When you see the empty grub menu, hit tab to see the list of commands.
Same for grub2, but the syntax is slightly different.
Just as one example, type 'root' at the grub CLI prompt.