MS-DOS® Version 4.00




Label shots reprinted with permission from Microsoft® Corporation



Label shots reprinted with permission from Microsoft® Corporation



Label shots reprinted with permission from Microsoft® Corporation

Boot Screen:


Insert Select diskette in Drive A:



Press Enter to continue installing DOS

or press ESC to exit.



A>_


Package Contents:

Box shot(s) reprinted with permission from Microsoft® Corporation
Paper Box Cover, P/N: not pictured
User Guide MS-DOS®, P/N: 03593
GW-BASIC® manual, P/N: 036-214-168
MS-DOS Shell User's Guide, P/N: not pictured
Install disk, P/N: 03598
Select disk, P/N: 03599
Operating 1, P/N: 03600
Operating 2, P/N: 03601
Operating 3, P/N: 04350
MS-DOS Shell, P/N: 03602


Collector's notes:
Rated: Rare and difficult to locate. This specimen incomplete.
Estimated Value: (complete package) Mint $120 VG $90 G-$80.

Vital Statistics:

Release Date: October, 1988
Disks in Set: 6
Diskette Form Factor:5.25", DS,DD 9 sectors per track
Capacity: 360k
Sector Size: 512 bytes
Sectors per cluster: 2
Reserved sectors: 1
Root directory entries: 112
Total sectors: 720
Sectors per FAT: 2 Disk Sides: 2
Total Tracks: 80
File System: FAT12



Version String (Sector 4A, Offset D1h):



CF 4D 53 20 44 4F 53 20 56 65 72 73 69 6F 6E 20 ¦  MS DOS Version

34 2E 30 30 20 28 43 29 43 6F 70 79 72 69 67 68 ¦ 4.00 (C)Copyrigh

74 20 31 39 38 38 20 4D 69 63 72 6F 73 6F 66 74 ¦ t 1988 Microsoft

20 43 6F 72 70 4C 69 63 65 6E 73 65 64 20 4D 61 ¦  CorpLicensed Ma

74 65 72 69 61 6C 20 2D 20 50 72 6F 70 65 72 74 ¦ terial - Propert

79 20 6F 66 20 4D 69 63 72 6F 73 6F 66 74 20 20 ¦ y of Microsoft


File Listing:

Disk 1: Install 10/06/1988 12:00a 33,321 IO.SYS 10/06/1988 12:00a 37,376 MSDOS.SYS 10/06/1988 12:00a 37,556 COMMAND.COM 01/01/1980 12:14a 38 AUTOEXEC.BAT 10/06/1988 12:00a 96 CONFIG.SYS 10/06/1988 12:00a 12,806 COUNTRY.SYS 10/06/1988 12:00a 10,396 DISKCOPY.COM 10/06/1988 12:00a 15,692 DISPLAY.SYS 10/06/1988 12:00a 60,935 FDISK.EXE 10/06/1988 12:00a 22,859 FORMAT.COM 10/06/1988 12:00a 14,727 KEYB.COM 10/06/1988 12:00a 23,328 KEYBOARD.SYS 10/06/1988 12:00a 19,415 REPLACE.EXE 10/06/1988 12:00a 3,642 SELECT.COM 10/06/1988 12:00a 28,695 SELECT.HLP 10/06/1988 12:00a 1,329 SELECT.PRT 10/06/1988 12:00a 11,456 SYS.COM 17 File(s) 333,667 bytes 0 Dir(s) 18,432 bytes free 362,496 bytes total disk space. 71,680 bytes in 2 hidden files. 272,384 bytes in 15 files. 18,432 bytes available on disk. 1,024 bytes in each allocation unit. 354 total allocation units on disk. 18 allocation units available on disk. Disk 2: Select 10/06/1988 12:00a 36,880 BACKUP.COM 10/06/1988 12:00a 49,068 EGA.CPI 10/06/1988 12:00a 22,859 FORMAT.COM 10/06/1988 12:00a 10,703 LCD.CPI 10/06/1988 12:00a 22,960 MODE.COM 10/06/1988 12:00a 36,946 RESTORE.COM 10/06/1988 12:00a 22,999 SELECT.DAT 10/06/1988 12:00a 95,107 SELECT.EXE 10/06/1988 12:00a 29,211 XMA2EMS.SYS 9 File(s) 326,733 bytes 0 Dir(s) 30,720 bytes free 362,496 bytes total disk space. 331,776 bytes in 9 files. 30,720 bytes available on disk. 1,024 bytes in each allocation unit. 354 total allocation units on disk. 30 allocation units available on disk. Disk 3: Operating 1 10/06/1988 12:00a 37,556 COMMAND.COM 10/06/1988 12:00a 5,753 ASSIGN.COM 10/06/1988 12:00a 18,263 ATTRIB.EXE 10/06/1988 12:00a 17,787 CHKDSK.COM 10/06/1988 12:00a 9,459 COMP.COM 10/06/1988 12:00a 21,574 DEBUG.COM 10/06/1988 12:00a 9,857 DISKCOMP.COM 10/06/1988 12:00a 14,069 EDLIN.COM 10/06/1988 12:00a 15,807 FC.EXE 10/06/1988 12:00a 11,129 FILESYS.EXE 10/06/1988 12:00a 5,941 FIND.EXE 10/06/1988 12:00a 21,739 IFSFUNC.EXE 10/06/1988 12:00a 17,813 JOIN.EXE 10/06/1988 12:00a 4,458 LABEL.COM 10/06/1988 12:00a 20,005 MEM.EXE 10/06/1988 12:00a 2,134 MORE.COM 10/06/1988 12:00a 13,424 SHARE.EXE 10/06/1988 12:00a 5,882 SORT.EXE 10/06/1988 12:00a 18,467 SUBST.EXE 10/06/1988 12:00a 6,302 TREE.COM 10/06/1988 12:00a 17,055 XCOPY.EXE 21 File(s) 294,474 bytes 0 Dir(s) 56,320 bytes free 362,496 bytes total disk space. 306,176 bytes in 21 files. 56,320 bytes available on disk. 1,024 bytes in each allocation unit. 354 total allocation units on disk. 55 allocation units available on disk. Disk 4: Operating 2 10/06/1988 12:00a 37,556 COMMAND.COM 10/06/1988 12:00a 87,776 EMM386.SYS 10/06/1988 12:00a 7,963 EXE2BIN.EXE 10/06/1988 12:00a 80,608 GWBASIC.EXE 10/06/1988 12:00a 43,988 LINK.EXE 10/06/1988 12:00a 14,131 PRINT.COM 10/06/1988 12:00a 8,235 RAMDRIVE.SYS 10/06/1988 12:00a 10,224 SMARTDRV.SYS 10/06/1988 12:00a 29,211 XMA2EMS.SYS 9 File(s) 319,692 bytes 0 Dir(s) 39,936 bytes free 362,496 bytes total disk space. 322,560 bytes in 9 files. 39,936 bytes available on disk. 1,024 bytes in each allocation unit. 354 total allocation units on disk. 39 allocation units available on disk. Disk 5: Operating 3 10/06/1988 12:00a 33,321 IO.SYS 10/06/1988 12:00a 37,376 MSDOS.SYS 10/06/1988 12:00a 37,556 COMMAND.COM 10/06/1988 12:00a 9,105 ANSI.SYS 10/06/1988 12:00a 11,154 APPEND.EXE 10/06/1988 12:00a 12,806 COUNTRY.SYS 10/06/1988 12:00a 15,692 DISPLAY.SYS 10/06/1988 12:00a 5,241 DRIVER.SYS 10/06/1988 12:00a 16,702 FASTOPEN.EXE 10/06/1988 12:00a 10,239 GRAFTABL.COM 10/06/1988 12:00a 16,693 GRAPHICS.COM 10/06/1988 12:00a 9,397 GRAPHICS.PRO 10/06/1988 12:00a 6,261 HIMEM.SYS 10/06/1988 12:00a 14,727 KEYB.COM 10/06/1988 12:00a 23,328 KEYBOARD.SYS 10/06/1988 12:00a 22,960 MODE.COM 10/06/1988 12:00a 6,878 NLSFUNC.EXE 10/06/1988 12:00a 18,914 PRINTER.SYS 10/06/1988 12:00a 8,235 RAMDRIVE.SYS 10/06/1988 12:00a 10,588 RECOVER.COM 10/06/1988 12:00a 6,404 4201.CPI 10/06/1988 12:00a 720 4208.CPI 10/06/1988 12:00a 370 5202.CPI 10/12/1988 09:13p 14,148 README.TXT 24 File(s) 348,815 bytes 0 Dir(s) 1,024 bytes free 362,496 bytes total disk space. 71,680 bytes in 2 hidden files. 289,792 bytes in 22 files. 1,024 bytes available on disk. 1,024 bytes in each allocation unit. 354 total allocation units on disk. 1 allocation units available on disk. Disk 6: MS-DOS Shell 10/06/1988 12:00a 37,556 COMMAND.COM 10/06/1988 12:00a 17,787 CHKDSK.COM 10/06/1988 12:00a 10,396 DISKCOPY.COM 10/06/1988 12:00a 263 PCIBMDRV.MOS 10/06/1988 12:00a 14,131 PRINT.COM 10/06/1988 12:00a 4,406 SHELL.CLR 10/06/1988 12:00a 66,527 SHELL.HLP 10/06/1988 12:00a 4,588 SHELL.MEU 10/06/1988 12:00a 3,894 SHELLB.COM 10/06/1988 12:00a 153,855 SHELLC.EXE 10/06/1988 12:00a 6,660 DOSUTIL.MEU 11 File(s) 320,063 bytes 0 Dir(s) 36,864 bytes free 362,496 bytes total disk space. 325,632 bytes in 11 files. 36,864 bytes available on disk. 1,024 bytes in each allocation unit. 354 total allocation units on disk. 36 allocation units available on disk.

MD5 Signatures:

IO SYS 29497F247E9DC74BB313E7D9F31BB1FE MSDOS COM 1CE3D69094B51B74511EF6A822ACF3FC COMMAND COM F88E392ECC87EB305BA83D9DC25C7C70 VER Command: MS-DOS Version 4.00

Version History:

Superceeds MS-DOS® 3.3x. This 4.00 release is the domestic retail version. Microsoft® Corporation had been approached by Siemens in Germany to write a multitasking OEM version of DOS in 1986, which they did. It saw limited service, and like other non-U.S. versions the numbering schema was not parallel to domestic releases. The version shown here is the actual U.S. release of 4.00 that was written by IBM (their first lead on OS production). This was the first non-OEM Microsoft version to upgrade partition support beyond 32MB. Also notable is this was the end of the line in DOS history for true "OEM" releases (total system compatibility had been reached worldwide). Up to this point, hardware platforms had required special low-level code in IO.SYS / IBMBIO.COM to support their architecture. With the practice of calling third party distributions "OEM" going forward with later versions, the term has been somewhat abused.