The startup disk contains the active system software loaded at system startup. It contains a set of basic utilities that can be used to fix multiple Windows startup errors.
Startup disks can be created on Windows 98/ME/XP systems and will cause your computer to start to a DOS prompt (command line).
A DOS startup disk can be made in Windows 98 by using the create startup disk button, present on the "Startup Disk" tab under Add/Remove Programs utility. An MS-DOS startup disk must have the invisible system files (IO.SYS and MSDOS.SYS) and a COMMAND.COM file.
You can also create the disk from the DOS command line.
cd Windows\command
bootdisk a:











