>Well, according to the files present on /dev/sdb1, grub is
installed. I
>tried the chainloader+1, didn't work, now I'm about to reboot and try the
> map syntax to swap the bios drive orders.
And that didn't work either. :(
As I said in my earlier email, grub1 will not boot from an ext4 /boot.
I see by the grub file on the F12-x64 dvd that it is still grub-0.97
so it
isn't grub2, which I initially thought might be the problem.
grub2 is able to boot from an ext4 /boot but let's not go there.
Is it safe to do a "grub-install /dev/sdb" from an F10
boot?
If /boot were ext3, you would have to do mount your F12 partitions
with (for example) a "root" partition of "/mnt" and then run
"grub-install --root-directory /mnt /dev/sdb" (or "... (hd1)")
Are you booting at the moment from /dev/sda or from a CD/DVD?