I recently wiped out of my Acer Aspire One with the intent of putting BT4R2 onto it. I installed BT4 onto a USB thumb drive and booted off it. I ran the install.sh, and used the entire hard drive. The install goes fine. When I reboot the computer, I get a grub rescue> prompt… what am I doing wrong here? How do I fix this? I tried reinstalling the whole thing again and still get the grub prompt.