How to Create Ms-Dos BootCD (Hiren's Bootable CD)? Tools Used: 도구들 쓰임새 bfi.exe (Build Floppy Image - to create bootable image from files) mkisofs.exe (a tool to create/build the CDRom ISO image file) build-iso.cmd (batch file to create floppy and iso image) We will need some files from Windows ME or Windows XP startup disk io.sys (Dos Input Output System file) msdos.sys (Dos system ..