I can manually boot my sole Ubuntu 10.10 install from my USB stick typing the following commands:
set root=(hda0) linux /vmlinux root=/dev/sda1 ro initrd /initrd.img boot
What I was hoping for is to have the USB do it for me. No typing required...?
I followed directions from these urls (most didn't work)
and some pretty extensive searching here. There's 10 pages at 50 per page. I did what I could and now turn to the experts.
Summary of steps used to make USB boot to grub2, so far...
mkdir -p /media/GRUB2_RESCU/boot/grub sudo cp /usr/lib/grub/i386-pc/* /media/GRUB2_RESCU/boot/grub echo '(hd0) /dev/sda' > /media/GRUB2_RESCU/boot/grubdevice.map sudo grub-install --root-directory=/media /dev/sdb sudo grub-mkconfig -o /media/GRUB2_RESCU/boot/grub/grub.cfg
Thank you for your time.