How do you manufacture a usb flash drive boot competent please.?

How do you manufacture a usb flash drive boot competent please.?

SOME and I denote some new BIOSes will check for bootability on external drives but even if your computer is investigational it may not have a unusual BIOS. - You MIGHT be able to update the bios to a foreign version that allows this. possibly



Then format your disgo and select the make the drive bootable chance, but it wont boot into anything unless you put that onto it (like MS-DOS say)
You can't
You don't! The computer has no passageway to check it for bootability.
This is a funtion of the motherboard bios settings, some motherboards supprt, many do not.