I think you're confused. I don't mean install to a USB drive, I mean install from a USB drive. You don't need a DVD at all in that case.
However, some (quite old) computers don't allow booting from a USB drive, so it is possible that you were encountering that issue. You can check your motherboard manufacturer's website for a BIOS update that may add that feature for your particular motherboard.
Nick
Bookmarks