MSCDEX

MSCDEX
"Microsoft CD-ROM Extensions" redirects here. For Microsoft's extension to the ISO 9660 format, see Joliet (file system).

MSCDEX or Microsoft MS-DOS CD-ROM Extensions is a software program produced by Microsoft and included with MS-DOS 6.x and certain versions of Microsoft Windows[1]. Earlier versions of MSCDEX were installable add-ons beginning with MSDOS 3.1[2]

It is a driver executable which allows DOS programs to recognize, read, and control CD-ROMs. This requires the previous loading of an appropriate CD-ROM device driver (example: oakcdrom.sys), usually from CONFIG.SYS. The program was used up until Windows 95 when it was replaced by the 32-bit version CDFS.

The final version of the MSCDEX program was 2.23.

The driver uses the Microsoft Networks interface in MS-DOS. Which is the reason that at least v3.1 of MS-DOS is required. The driver essentially looks like a network drive from the system perspective. It's implemented as a TSR program. [3]

There's a free alternative called SHSUCDX that is used with the IDE/ATA driver UIDE.SYS first released in 2005 [4] that is often used with FreeDOS and works with MS-DOS as well.

References

  1. ^ History of Microsoft MS-DOS CD-ROM Extensions
  2. ^ Apparently release notes for Microsoft MS-DOS CD-ROM Extensions 2.1
  3. ^ cybermax.tripod.com - Subject: Microsoft MS-DOS CD-ROM Extensions 2.1
  4. ^ tmfc.net - SHSUCDX V3.03E CD-ROM Redirector

External links


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