I'm sure this sounds like a question that's been answered a million times, but I can't find anything related to what I need.
What I have is a USB drive that, as far as I can tell, has been formatted correctly, with three partitions, one being bootable with a windows installer. I've checked the MBR and that parition is set to bootable and active, but the bios just doesn't seem to want to pick it up. I have everything in the BIOS set up correctly (I've done this a million times before) but it doesn't want to detect the bootable drive.
Is there a simple bootloader that can be burnt to a CD or a thumbdrive that loads, detects all paritions (such as hard drives or, in this case, USB partitions) and manually forces a boot from that partition?
Nothing I seem to google helps. Thanks!
EDIT: I downloaded a super-grub CD iso and burnt/booted into it. It will detect my little 1 gb thumb drive but not the external harddrive. However, I can plug the hard drive into my laptop and everything will work just fine. I'm beginning to think this is a BIOS error or something.