We all know that when making a boot disk on a USB flash drive, people generally use the formatting software that comes with the manufacturer's product. Actually, there is another method: under WIN98, use the `Copy system files` method to format it as a boot disk. A boot disk made this way has only the three most basic boot files, IO.SYS MSDOS.SYS COMMAND.COM, and it can also boot using USB-ZIP or USB-FDD mode. Another key point is that for a boot disk with boot capability, if you delete all the files inside it, even if there are no files left at all, as long as you directly copy any bootable files back onto it, the USB flash drive itself can still boot. The prerequisite is that you must not delete the files by formatting it. This way we can change the boot files inside it at any time. You can replace them with anything.



