On Tuesday, 27 February 2024 00:12:07 GMT Mark Knecht wrote: > I have no experience beyond three operating systems on a single machine > but if you grabbed just 2 or 3 USB flash drives then I would think you > could test it pretty easily. I believe the UEFI boot procedures are > storing a unique ID for the disk or the partition you are requesting. If you > have a unique ID that's different for each flash drive it would (hopefully) > find the one you're looking for which should be relatively simple. > > I would suggest you use the boot ordering feature and make the > system hard drive last in the list. If no USB devices are plugged in > it would default to your system drive. If a flash drive is plugged in > it should find its ID and boot that first. > > I do not know if, for instance, you had 20 different drives listed in > your BIOS whether it would be a lot slower to boot but you could > test that yourself.
My experience is that the BIOS will discard any boot devices that are not present at the time of booting. I don't know whether that's typical or just what I've found. -- Regards, Peter.
