DR DOS 7.x

DR DOS is an MS-DOS compatible operating system from Digital Research that evolved from their earlier CP/M-86 based products Concurrent DOS and DOS Plus.

Release notes

This version adds DPMI support, VDM based multitasking, , and Novell Personal Netware. Novell had promised a wide variety of other features, but failed to deliver.

DR DOS was briefly renamed to "Novell DOS' after it was purchased by Novell. Version 7 was also briefly owned by Caldera released as OpenDOS, and then Lineo, and finally wound up under DRDOS, Inc.

After Microsoft intended to merge MS-DOS and Windows 95 as one commercial product, interest in developing DR DOS further mostly stopped. Eventually, parts of DR DOS 7.x were open sourced, and spawned a separate open source project based on that (not mirrored here).

Product type
Release date
Minimum CPU
User interface
Download count
61 (18 for release)


Download name Version Language Architecture File size Downloads
Caldera DR-DOS 7.02 (02-05-1998) (3.5-1.44mb) 7.02 English 5.77MB 3
Caldera DR-DOS 7.02 (02-27-1998) (3.5-1.44mb) 7.02 English 5.77MB 1
Caldera DR-DOS 7.02 Lite (02-05-1998) (3.5-1.44mb) 7.02 Lite English 2.82MB 2
Caldera DR-DOS 7.03 (01-07-1999) (3.5-1.44mb) 7.03 English 5.8MB 6
Caldera OpenDOS 7.01 (11-04-1997) (3.5-720k) (5.25-1.2mb) (3.5-1.44mb) 7.01 English 5.58MB 1
Novell DOS 7.0 (01-26-1994) (3.5-1.44mb) 7.0 English 8.27MB 1
Novell DOS 7.0 (01-26-1994) (5.25-1.2mb) 7.0 English 8.26MB 1
Novell DOS 7.0 (02-22-1994) [German] (3.5-1.44mb) 7.0 German 9.53MB 3


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