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by lproven 783 days ago
Agreed.

From MS-DOS 6, remove the defrag, backup and antivirus programs, and DoubleSpace/DriveSpace, and that should I think cover all external code.

If I remember correctly, it didn't include CD-ROM drivers, just MSCDEX to run on top of one... and the network stack was an optional extra. I'm not even 100% sure it includes a mouse driver as standard.

IBM PC DOS 6.3, 7.0 and 7.1 include some additional IBM code: Rexx in place of QBASIC, the IBM E editor, but not much else.