PCjs Machines
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COMPAQ MS-DOS 3.31
First released in 1987 by COMPAQ Computer Corp, this version of MS-DOS displays the following messages on boot:
The COMPAQ Personal Computer MS-DOS
Version 3.31
(C) Copyright Compaq Computer Corp. 1982, 1988
(C) Copyright Microsoft Corp. 1981, 1987
This was the first version of DOS to support 32-bit logical sector numbers, enabling partitions larger than 32Mb and partitions that extended beyond the first 32Mb of disk space. These features were soon added to DOS 4.0 and OS/2 1.1 as well.
An older version of COMPAQ MS-DOS 3.31 can be found on the COMPAQ Diagnostics 5.08 diskette, a 360Kb disk image from the PCjs Archives that contains hidden MS-DOS 3.31 files dated September 1987. The disk displays a different boot message:
The COMPAQ Personal Computer MS-DOS
Version 3.31
(C) Copyright Compaq Computer Corp. 1982, 1987
(C) Copyright Microsoft Corp. 1981, 1987
making it clear that the diskette is a COMPAQ MS-DOS 3.31 diskette from 1987; all the other sources we’ve checked only have disks from 1988 or later.
UPDATE: PCjs has since unearthed another diskette, COMPAQ MS-DOS 3.31 (1987), containing more 1987 binaries.
Later revisions of COMPAQ MS-DOS 3.31 were released as well. We have archived three “Rev. G” disks obtained from WinWorld (see “Microsoft MS-DOS 3.31 [Compaq OEM Rev G] (3.5-720k)”). All the files on those disks are dated May 1990.
The FASTART program on Disk 1 expects a “USER PROGRAMS” disk. For example, you could use the
“COMPAQ User Programs (1989)” diskette, which was part of a later
COMPAQ MS-DOS 4.01 release, since COMPAQ states that the disk “supersedes earlier versions”.
Directory Listings of the distribution diskettes are provided below.
[PCjs Machine "deskpro386"]
Waiting for machine "deskpro386" to load....
Directory Listings
The following disk is from the PCjs Software Archive, and unfortunately, it is not an original distribution disk, but it’s included here because it’s the only available copy of other COMPAQ MS-DOS 3.31 binaries released in 1987.
It’s safe to say the following binaries were not part of the original distribution:
- EXMM.SYS (ZSoft Extended Memory Manager)
- HIMEM.SYS (DOS XMS Driver, Version 2.04 - 8/17/88)
- SMARTDRV.SYS (Microsoft SMARTDrive Disk Cache v2.10)
but, in the interest of preserving all manner of historical curiosities, we have decided to leave the disk as-is.
Directory of COMPAQ MS-DOS 3.31 (1987)
Volume in drive A has no label
Directory of A:\
IBMBIO COM* 23591 9-16-87 12:00p
IBMDOS COM* 30632 9-16-87 12:00p
COMMAND COM 25332 9-16-87 12:00p
EXMM SYS 4574 11-05-86 12:07p
ANSI SYS 1709 9-16-87 12:00p
CLOCK SYS 1787 9-16-87 12:00p
COUNTRY SYS 11254 9-16-87 12:00p
DISKCOPY COM 6264 9-16-87 12:00p
DISKINIT EXE 49971 9-16-87 12:00p
DISPLAY SYS 11259 9-16-87 12:00p
DRIVER SYS 1385 9-16-87 12:00p
ENHDISK SYS 3321 9-16-87 12:00p
FASTOPEN EXE 3888 9-16-87 12:00p
FDISK COM 54051 9-16-87 12:00p
FORMAT COM 13643 9-16-87 12:00p
KEYB COM 10868 9-16-87 12:00p
KEYBOARD SYS 41144 9-16-87 12:00p
MODE COM 15159 9-16-87 12:00p
PRINTER SYS 13559 9-16-87 12:00p
SYS COM 6193 9-16-87 12:00p
VDISK SYS 3634 9-16-87 12:00p
XCOPY EXE 11216 9-16-87 12:00p
APPEND EXE 5794 9-16-87 12:00p
ASSIGN COM 1530 9-16-87 12:00p
ATTRIB EXE 10656 9-16-87 12:00p
BACKUP COM 30048 9-16-87 12:00p
CHKDSK COM 11923 9-16-87 12:00p
COMP COM 4183 9-16-87 12:00p
DEBUG COM 16000 9-16-87 12:00p
DISKCOMP COM 5848 9-16-87 12:00p
EDLIN COM 7495 9-16-87 12:00p
EXE2BIN EXE 3050 9-16-87 12:00p
FIND EXE 6403 9-16-87 12:00p
GRAFTABL COM 6208 9-16-87 12:00p
GRAPHICS COM 7576 9-16-87 12:00p
JOIN EXE 9612 9-16-87 12:00p
LABEL COM 2346 9-16-87 12:00p
LINK EXE 39076 9-16-87 12:00p
MORE COM 282 9-16-87 12:00p
PRINT COM 8995 9-16-87 12:00p
RECOVER COM 5369 9-16-87 12:00p
RESTORE COM 35720 9-16-87 12:00p
SHARE EXE 8664 9-16-87 12:00p
SORT EXE 1946 9-16-87 12:00p
SUBST EXE 10552 9-16-87 12:00p
TREE COM 3540 9-16-87 12:00p
WORDS 660 9-16-87 12:00p
BASIC COM 3532 9-16-87 12:00p
BASICA COM 3532 9-16-87 12:00p
BASICA EXE 79272 9-16-87 12:00p
NLSFUNC EXE 3029 9-16-87 12:00p
REPLACE EXE 13886 9-16-87 12:00p
SELECT COM 4188 9-16-87 12:00p
SETCLOCK COM 3715 9-16-87 12:00p
INTEREST BAS 384 9-16-87 12:00p
4201 CPI 17089 9-16-87 12:00p
5202 CPI 459 9-16-87 12:00p
EGA CPI 49065 9-16-87 12:00p
HIMEM SYS 6261 8-19-88 10:54a
SMARTDRV SYS 10224 12-29-88 11:37p
60 file(s) 782546 bytes
418304 bytes free
Directory of COMPAQ MS-DOS 3.31D (360K Disk 1)
Volume in drive A is STARTUP
Directory of A:\
IBMBIO COM* 23591 10-03-88 12:00p
IBMDOS COM* 30648 10-03-88 12:00p
ANSI SYS 1709 10-03-88 12:00p
CLOCK SYS 1787 10-03-88 12:00p
COMMAND COM 25332 10-03-88 12:00p
COUNTRY SYS 11254 10-03-88 12:00p
DISKCOPY COM 6264 10-03-88 12:00p
DISKINIT EXE 55795 10-03-88 12:00p
DISPLAY SYS 11651 10-03-88 12:00p
DRIVER SYS 1385 10-03-88 12:00p
ENHDISK SYS 3441 10-03-88 12:00p
FASTOPEN EXE 3888 10-03-88 12:00p
FDISK COM 45052 10-03-88 12:00p
FORMAT COM 13675 10-03-88 12:00p
KEYB COM 10974 10-03-88 12:00p
KEYBOARD SYS 41144 10-03-88 12:00p
MODE COM 15188 10-03-88 12:00p
PRINTER SYS 13559 10-03-88 12:00p
SYS COM 6193 10-03-88 12:00p
VDISK SYS 3759 10-03-88 12:00p
XCOPY EXE 11216 10-03-88 12:00p
21 file(s) 337505 bytes
15360 bytes free
[Source]
Directory of COMPAQ MS-DOS 3.31D (360K Disk 2)
Volume in drive A is OPERATING#1
Directory of A:\
APPEND EXE 5794 10-03-88 12:00p
ASSIGN COM 1530 10-03-88 12:00p
ATTRIB EXE 10656 10-03-88 12:00p
BACKUP COM 30048 10-03-88 12:00p
CHKDSK COM 11939 10-03-88 12:00p
COMMAND COM 25332 10-03-88 12:00p
COMP COM 4183 10-03-88 12:00p
DEBUG COM 16000 10-03-88 12:00p
DISKCOMP COM 5848 10-03-88 12:00p
DISKCOPY COM 6264 10-03-88 12:00p
EDLIN COM 7495 10-03-88 12:00p
EXE2BIN EXE 3050 10-03-88 12:00p
FIND EXE 6403 10-03-88 12:00p
FORMAT COM 13675 10-03-88 12:00p
GRAFTABL COM 6272 10-03-88 12:00p
GRAPHICS COM 7576 10-03-88 12:00p
JOIN EXE 9612 10-03-88 12:00p
LABEL COM 2346 10-03-88 12:00p
LINK EXE 39076 10-03-88 12:00p
MORE COM 282 10-03-88 12:00p
PRINT COM 8995 10-03-88 12:00p
RECOVER COM 5385 10-03-88 12:00p
RESTORE COM 35720 10-03-88 12:00p
SHARE EXE 8664 10-03-88 12:00p
SORT EXE 1946 10-03-88 12:00p
SUBST EXE 10552 10-03-88 12:00p
TREE COM 3540 10-03-88 12:00p
XCOPY EXE 11216 10-03-88 12:00p
WORDS 660 10-03-88 12:00p
29 file(s) 300059 bytes
47104 bytes free
[Source]
Directory of COMPAQ MS-DOS 3.31D (360K Disk 3)
Volume in drive A is OPERATING#2
Directory of A:\
BASIC COM 3532 10-03-88 12:00p
BASICA COM 3532 10-03-88 12:00p
BASICA EXE 79304 10-03-88 12:00p
COMMAND COM 25332 10-03-88 12:00p
NLSFUNC EXE 3029 10-03-88 12:00p
REPLACE EXE 13886 10-03-88 12:00p
SELECT COM 4188 10-03-88 12:00p
SETCLOCK COM 3715 10-03-88 12:00p
INTEREST BAS 384 10-03-88 12:00p
4201 CPI 17089 10-03-88 12:00p
5202 CPI 459 10-03-88 12:00p
EGA CPI 49065 10-03-88 12:00p
12 file(s) 203515 bytes
153600 bytes free
[Source]
Directory of COMPAQ MS-DOS 3.31D (720K Disk 1)
Volume in drive A is FASTART
Directory of A:\
IBMBIO COM* 23591 10-03-88 12:00p
IBMDOS COM* 30648 10-03-88 12:00p
COMMAND COM 25332 10-03-88 12:00p
AUTOEXEC BAT* 11 10-14-88 12:00p
CONFIG SYS* 46 10-14-88 12:00p
EXTDISK SYS 11721 10-14-88 12:00p
FORMAT COM 13675 10-14-88 12:00p
FASTART EXE 232841 10-14-88 12:00p
8 file(s) 337865 bytes
387072 bytes free
Directory of COMPAQ MS-DOS 3.31D (720K Disk 2)
Volume in drive A is STARTUP
Directory of A:\
IBMBIO COM* 23591 10-03-88 12:00p
IBMDOS COM* 30648 10-03-88 12:00p
COMMAND COM 25332 10-03-88 12:00p
ANSI SYS 1709 10-03-88 12:00p
CLOCK SYS 1787 10-03-88 12:00p
COUNTRY SYS 11254 10-03-88 12:00p
DISKCOPY COM 6264 10-03-88 12:00p
DISKINIT EXE 55795 10-03-88 12:00p
DISPLAY SYS 11651 10-03-88 12:00p
DRIVER SYS 1385 10-03-88 12:00p
ENHDISK SYS 3441 10-03-88 12:00p
FASTOPEN EXE 3888 10-03-88 12:00p
FDISK COM 45052 10-03-88 12:00p
FORMAT COM 13675 10-03-88 12:00p
KEYB COM 10974 10-03-88 12:00p
KEYBOARD SYS 41144 10-03-88 12:00p
MODE COM 15188 10-03-88 12:00p
PRINTER SYS 13559 10-03-88 12:00p
SYS COM 6193 10-03-88 12:00p
VDISK SYS 3759 10-03-88 12:00p
XCOPY EXE 11216 10-03-88 12:00p
21 file(s) 337505 bytes
382976 bytes free
Directory of COMPAQ MS-DOS 3.31D (720K Disk 3)
Volume in drive A is OPERATING
Directory of A:\
APPEND EXE 5794 10-03-88 12:00p
ASSIGN COM 1530 10-03-88 12:00p
ATTRIB EXE 10656 10-03-88 12:00p
BACKUP COM 30048 10-03-88 12:00p
BASIC COM 3532 10-03-88 12:00p
BASICA COM 3532 10-03-88 12:00p
BASICA EXE 79304 10-03-88 12:00p
CHKDSK COM 11939 10-03-88 12:00p
COMMAND COM 25332 10-03-88 12:00p
COMP COM 4183 10-03-88 12:00p
DEBUG COM 16000 10-03-88 12:00p
DISKCOMP COM 5848 10-03-88 12:00p
DISKCOPY COM 6264 10-03-88 12:00p
EDLIN COM 7495 10-03-88 12:00p
EXE2BIN EXE 3050 10-03-88 12:00p
FIND EXE 6403 10-03-88 12:00p
FORMAT COM 13675 10-03-88 12:00p
GRAFTABL COM 6272 10-03-88 12:00p
GRAPHICS COM 7576 10-03-88 12:00p
JOIN EXE 9612 10-03-88 12:00p
LABEL COM 2346 10-03-88 12:00p
LINK EXE 39076 10-03-88 12:00p
MORE COM 282 10-03-88 12:00p
NLSFUNC EXE 3029 10-03-88 12:00p
PRINT COM 8995 10-03-88 12:00p
RECOVER COM 5385 10-03-88 12:00p
REPLACE EXE 13886 10-03-88 12:00p
RESTORE COM 35720 10-03-88 12:00p
SELECT COM 4188 10-03-88 12:00p
SETCLOCK COM 3715 10-03-88 12:00p
SHARE EXE 8664 10-03-88 12:00p
SORT EXE 1946 10-03-88 12:00p
SUBST EXE 10552 10-03-88 12:00p
TREE COM 3540 10-03-88 12:00p
XCOPY EXE 11216 10-03-88 12:00p
4201 CPI 17089 10-03-88 12:00p
5202 CPI 459 10-03-88 12:00p
EGA CPI 49065 10-03-88 12:00p
INTEREST BAS 384 10-03-88 12:00p
WORDS 660 10-03-88 12:00p
40 file(s) 478242 bytes
231424 bytes free
COMPAQ MS-DOS 3.31 (Rev. G)
Directory of COMPAQ MS-DOS 3.31G (720K Disk 1)
Volume in drive A is FASTART
Directory of A:\
IBMBIO COM* 23740 5-08-90 12:00p
IBMDOS COM* 30650 5-08-90 12:00p
COMMAND COM* 25398 5-08-90 12:00p
AUTOEXEC BAT* 11 5-08-90 12:00p
CONFIG SYS* 45 5-08-90 12:00p
FASTART EXE 227233 5-08-90 12:00p
EXTDISK SYS 10406 5-08-90 12:00p
7 file(s) 317483 bytes
408576 bytes free
Directory of COMPAQ MS-DOS 3.31G (720K Disk 2)
Volume in drive A is STARTUP
Directory of A:\
IBMBIO COM* 23740 5-08-90 12:00p
IBMDOS COM* 30650 5-08-90 12:00p
COMMAND COM 25398 5-08-90 12:00p
DISKCOPY COM 6850 5-08-90 12:00p
FDISK COM 51136 5-08-90 12:00p
FORMAT COM 14733 5-08-90 12:00p
KEYB COM 11076 5-08-90 12:00p
MODE COM 16618 5-08-90 12:00p
SYS COM 6227 5-08-90 12:00p
FASTOPEN EXE 3888 5-08-90 12:00p
XCOPY EXE 11776 5-08-90 12:00p
ANSI SYS 2023 5-08-90 12:00p
CLOCK SYS 1789 5-08-90 12:00p
COUNTRY SYS 11254 5-08-90 12:00p
DISPLAY SYS 11971 5-08-90 12:00p
DRIVER SYS 1520 5-08-90 12:00p
ENHDISK SYS 10406 5-08-90 12:00p
KEYBOARD SYS 41164 5-08-90 12:00p
PRINTER SYS 13751 5-08-90 12:00p
VDISK SYS 3768 5-08-90 12:00p
20 file(s) 299738 bytes
421888 bytes free
Directory of COMPAQ MS-DOS 3.31G (720K Disk 3)
Volume in drive A is OPERATING
Directory of A:\
APPEND EXE 5810 5-08-90 12:00p
ASSIGN COM 1530 5-08-90 12:00p
ATTRIB EXE 10656 5-08-90 12:00p
BACKUP COM 30738 5-08-90 12:00p
BASIC COM 3534 5-08-90 12:00p
BASICA COM 3534 5-08-90 12:00p
BASICA EXE 79434 5-08-90 12:00p
CHKDSK COM 11941 5-08-90 12:00p
COMMAND COM 25398 5-08-90 12:00p
COMP COM 4183 5-08-90 12:00p
DEBUG COM 16002 5-08-90 12:00p
DISKCOMP COM 5848 5-08-90 12:00p
DISKCOPY COM 6850 5-08-90 12:00p
EDLIN COM 7495 5-08-90 12:00p
EXE2BIN EXE 3050 5-08-90 12:00p
FIND EXE 6403 5-08-90 12:00p
FORMAT COM 14733 5-08-90 12:00p
GRAFTABL COM 6274 5-08-90 12:00p
GRAPHICS COM 7578 5-08-90 12:00p
JOIN EXE 9612 5-08-90 12:00p
LABEL COM 2363 5-08-90 12:00p
LINK EXE 43988 5-08-90 12:00p
MORE COM 314 5-08-90 12:00p
NLSFUNC EXE 3029 5-08-90 12:00p
PRINT COM 9309 5-08-90 12:00p
RECOVER COM 5387 5-08-90 12:00p
REPLACE EXE 14304 5-08-90 12:00p
RESTORE COM 35868 5-08-90 12:00p
SELECT COM 4190 5-08-90 12:00p
SETCLOCK COM 3717 5-08-90 12:00p
SHARE EXE 8666 5-08-90 12:00p
SORT EXE 1946 5-08-90 12:00p
SUBST EXE 10552 5-08-90 12:00p
TREE COM 3540 5-08-90 12:00p
XCOPY EXE 11776 5-08-90 12:00p
4201 CPI 17089 5-08-90 12:00p
5202 CPI 459 5-08-90 12:00p
EGA CPI 49065 5-08-90 12:00p
INTEREST BAS 384 5-08-90 12:00p
WORDS 660 5-08-90 12:00p
EGA_THIN CPI 49030 5-08-90 12:00p
LCD_THIN CPI 10618 5-08-90 12:00p
LCD CPI 10752 5-08-90 12:00p
43 file(s) 557609 bytes
150528 bytes free