(What I just described is the Floppy Emulation mode of the El Torito standard modern systems can use the direct access method, which gives them access to the full CD.) Once those load from the virtual floppy you now have access to the full CD-ROM. This floppy image acts as a bootstrap loader of sorts in the case of DOS it would contain the kernel and, plus MSCDEX and CD-ROM drivers. If it finds this image it loads it into RAM and uses it as a virtual floppy drive to boot from. Now, I don’t think this is an official Microsoft release, and I have no idea where I got it (I’ve had it for 15 years, at least), but it does indeed work.īasically, a bootable CD-ROM contains (what amounts to) a 1.44MB floppy image in a special location that your system/IDE/SCSI BIOS looks for during startup. It boots right into the MS-DOS Setup and proceeds just as if you were installing from floppies. I have a bootable MS-DOS 6.22 Full Installation ISO that I’ve used on both real PCs and VMs.

You really don’t know what you’re talking about. The closest you'll get are some OEM system restore CDs and that'd be too old for being bootable either. On a fresh system, that's impossible without a boot disk with CD-ROM drivers (like.win9x boot disks). You're talking freaking DOS, an OS without a CD-ROM driver of its own, to be isntalled from disc. It doesn't exist in a bootable form either. MS-DOS 6 CD releases don't legally exist. That certain 'abandonware' site is revising history again.

Ms Dos 6.22 Iso Download