The floppy disk has nothing to do with the operating system on the hard drive. You can use a floppy disk created in Windows XP to boot a computer that has Windows 2000, Windows 98, Windows 95, Windows 3.1, Windows Vista, Windows 7, Linux, Solaris, FreeBSD, etc...
I think you can only use a windowsbootable floppy disc for the system in which it was made from.
Four (4) startup disks are needed to boot Windows 2000 from floppy disks.
Four
4
Windows Me was created on 2000-09-14.
Wharf of Windows was created in 2000.
It is a set of four rescue disks.
4 "four" rescue disks.
Windows Mobile was created on 2000-04-19.
The desktop appears in the classic Windows format when you log on to the Windows XP computer as that user.
booty
Windows 98: You can't (using the Operating System) Windows 2000: CTL+ALT+DEL then choose "Lock Computer" Windows XP: Same as Windows 2000 or use shortcut Windows Key + L