It seems like you can boot from a USB device without a bootloader to me. Even my 6 years old computers that still have a BIOS.
From what I read the BIOS simply looks for an mbr, loads it and executes it. But I have never knowingly written an mbr to any of my USB devices. So how is it that I can still boot from them when certain files are present? I doubt that the mbr could be inside of a file, because how would you ensure that it is exactly at the beginning of the partition.
So what am I missing?
diskpart
command-line tool in Windows to erase MBR + partition information using theclean
command. TIP: remove drive letter/mount points first. sevenforums.com/tutorials/…