MS-DOS® Version 6.21 Upgrade




Label shots reprinted with permission from Microsoft® Corporation


Label shots reprinted with permission from Microsoft® Corporation

Setup Screen:

Screen re-creation from original setup screen.
Screen Copyright ©Microsoft® Corporation

Package Contents:

Box shot(s) reprinted with permission from Microsoft® Corporation
Full version P/N: 147-099V621
Paper box cover, P/N: 57995
User Guide MS-DOS®, P/N: 57957
Registration Card,P/N: 55473
Disk compression offer insert, P/N: 57811
Disk 1, P/N: 147-099-386
Disk 2, P/N: 147-099-387
Disk 3, P/N: 147-099-388
Disk 4, P/N: 147-099-389

Collector's notes:
Rated: Available.
Estimated Value: $50

Vital Statistics:

Release Date: March, 1994
Disks in Set: 4
Diskette Form Factor:5.25", DS,HD 15 sectors per track
Capacity: 1.2Mb
Sector Size: 512 bytes
Disk Sides: 2
Total Tracks: 80
File System: FAT12



Version String (Sector 67, Offset 179h):



B4 3D F9 CD 21 C3 B0 03 CF 4D 53 20 44 4F 53 20 ¦  =  !    MS DOS

56 65 72 73 69 6F 6E 20 36 20 28 43 29 43 6F 70 ¦ Version 6 (C)Cop

79 72 69 67 68 74 20 31 39 38 31 2D 31 39 39 33 ¦ yright 1981-1993

20 4D 69 63 72 6F 73 6F 66 74 20 43 6F 72 70 20 ¦  Microsoft Corp

4C 69 63 65 6E 73 65 64 20 4D 61 74 65 72 69 61 ¦ Licensed Materia

6C 20 2D 20 50 72 6F 70 65 72 74 79 20 6F 66 20 ¦ l - Property of

4D 69 63 72 6F 73 6F 66 74 20 41 6C 6C 20 72 69 ¦ Microsoft All ri

67 68 74 73 20 72 65 73 65 72 76 65 64 20 4E 55 ¦ ghts reserved NU 


File Listing:

Disk 1 Setup: 03/10/1994 06:21a 40,566 IO.SYS 03/10/1994 06:21a 38,138 MSDOS.SYS 03/10/1994 06:21a 54,619 COMMAND.COM 03/10/1994 06:21a 29,544 DBLSPACE.BI# 03/10/1994 06:21a 11,208 ATTRIB.EXE 03/10/1994 06:21a 38 AUTOEXEC.BAT 03/10/1994 06:21a 73,756 BUSETUP.EXE 03/10/1994 06:21a 12,241 CHKDSK.EXE 03/10/1994 06:21a 13 CONFIG.SYS 03/10/1994 06:21a 19,546 COUNTRY.SYS 03/10/1994 06:21a 15,718 DEBUG.EXE 03/10/1994 06:21a 78,969 DEFRAG.EXE 03/10/1994 06:21a 4,284 DEFRAG.HL_ 03/10/1994 06:21a 14,299 DOSSETUP.INI 03/10/1994 06:21a 413 EDIT.COM 03/10/1994 06:21a 16,129 EXPAND.EXE 03/10/1994 06:21a 29,334 FDISK.EXE 03/10/1994 06:21a 22,916 FORMAT.COM 03/10/1994 06:21a 15,750 KEYB.COM 03/10/1994 06:21a 34,598 KEYBOARD.SYS 03/10/1994 06:21a 19,512 MEM.EX_ 03/10/1994 06:21a 27,401 MOUSE.CO_ 03/10/1994 06:21a 7,036 NLSFUNC.EXE 03/10/1994 06:21a 6,614 PACKING.LST 03/10/1994 06:21a 194,309 QBASIC.EXE 03/10/1994 06:21a 83,511 README.TXT 03/10/1994 06:21a 117,084 SCANDISK.EXE 03/10/1994 06:21a 6,470 SCANDISK.INI 03/10/1994 06:21a 110,766 SETUP.EXE 03/10/1994 06:21a 1,437 SETUP.MSG 03/10/1994 06:21a 9,432 SYS.COM 03/10/1994 06:21a 87,358 UNINSTAL.EXE 03/10/1994 06:21a 11,093 XCOPY.EX_ 33 File(s) 1,194,102 bytes 0 Dir(s) 11,776 bytes free 1,213,952 bytes total disk space. 1,202,176 bytes in 33 files. 11,776 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 23 allocation units available on disk. Disk 2: 03/10/1994 06:21a 6,260 ANSI.SY_ 03/10/1994 06:21a 7,467 APPEND.EX_ 03/10/1994 06:21a 16,770 CHKSTATE.SY_ 03/10/1994 06:21a 1,754 CHOICE.COM 03/10/1994 06:21a 7,249 DELTREE.EX_ 03/10/1994 06:21a 6,762 DISKCOMP.CO_ 03/10/1994 06:21a 8,306 DISKCOPY.CO_ 03/10/1994 06:21a 9,797 DISPLAY.SY_ 03/10/1994 06:21a 2,464 DOSHELP.HL_ 03/10/1994 06:21a 4,213 DOSKEY.CO_ 03/10/1994 06:21a 4,030 DRIVER.SY_ 03/10/1994 06:21a 15,709 EDIT.HL_ 03/10/1994 06:21a 18,340 EGA.CP_ 03/10/1994 06:21a 50,058 EMM386.EX_ 03/10/1994 06:21a 7,539 FASTHELP.EX_ 03/10/1994 06:21a 7,829 FASTOPEN.EX_ 03/10/1994 06:21a 12,065 FC.EX_ 03/10/1994 06:21a 4,880 FIND.EX_ 03/10/1994 06:21a 11,375 GRAPHICS.CO_ 03/10/1994 06:21a 413 HELP.COM 03/10/1994 06:21a 10,064 HIMEM.SY_ 03/10/1994 06:21a 10,720 INTERLNK.EX_ 03/10/1994 06:21a 26,446 INTERSVR.EX_ 03/10/1994 06:21a 649 LOADFIX.CO_ 03/10/1994 06:21a 119,557 MEMMAKER.EXE 03/10/1994 06:21a 6,017 MEMMAKER.HL_ 03/10/1994 06:21a 1,306 MEMMAKER.IN_ 03/10/1994 06:21a 14,899 MODE.CO_ 03/10/1994 06:21a 2,545 MORE.COM 03/10/1994 06:21a 11,957 MOVE.EX_ 03/10/1994 06:21a 25,361 MSCDEX.EXE 03/10/1994 06:21a 165,444 MSD.EXE 03/10/1994 06:21a 155,607 MWBACKUP.EX_ 03/10/1994 06:21a 20,119 NETWORKS.TXT 03/10/1994 06:21a 6,358 OS2.TXT 03/10/1994 06:21a 5,549 POWER.EX_ 03/10/1994 06:21a 113,105 QBASIC.HL_ 03/10/1994 06:21a 3,282 RAMDRIVE.SY_ 03/10/1994 06:21a 12,835 REPLACE.EX_ 03/10/1994 06:21a 8,120 SHARE.EX_ 03/10/1994 06:21a 12,740 SUBST.EX_ 03/10/1994 06:21a 1,289 VFINTD.38_ 03/10/1994 06:21a 2,661 WINA20.38_ 43 File(s) 939,910 bytes 0 Dir(s) 263,680 bytes free 1,213,952 bytes total disk space. 950,272 bytes in 43 files. 263,680 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 515 allocation units available on disk. Disk 3: 03/10/1994 06:21a 503 AV.GR_ 03/10/1994 06:21a 394 BK.GR_ 03/10/1994 06:21a 777 BKAV.GR_ 03/10/1994 06:21a 687 BKUD.GR_ 03/10/1994 06:21a 1,071 BKUDAV.GR_ 03/10/1994 06:21a 269,389 HELP.HL_ 03/10/1994 06:21a 6,176 LABEL.EX_ 03/10/1994 06:21a 950 MONOUMB.38_ 03/10/1994 06:21a 59,770 MSBACKDB.OVL 03/10/1994 06:21a 63,706 MSBACKDR.OVL 03/10/1994 06:21a 65,210 MSBACKFB.OVL 03/10/1994 06:21a 69,306 MSBACKFR.OVL 03/10/1994 06:21a 2,487 MSBACKUP.EX_ 03/10/1994 06:21a 112,396 MSBACKUP.HL_ 03/10/1994 06:21a 133,984 MSBACKUP.OVL 03/10/1994 06:21a 18,549 MSBCONFG.HL_ 03/10/1994 06:21a 47,226 MSBCONFG.OVL 03/10/1994 06:21a 6,956 MWBACKF.DL_ 03/10/1994 06:21a 30,437 MWBACKR.DL_ 03/10/1994 06:21a 141,281 MWBACKUP.HL_ 03/10/1994 06:21a 18,094 MWGRAFIC.DL_ 03/10/1994 06:21a 66,012 MWUNDEL.EX_ 03/10/1994 06:21a 17,458 MWUNDEL.HL_ 03/10/1994 06:21a 9,614 PRINT.EX_ 03/10/1994 06:21a 402 UD.GR_ 03/10/1994 06:21a 798 UDAV.GR_ 03/10/1994 06:21a 26,416 UNDELETE.EXE 03/10/1994 06:21a 1,071 WNTOOLS.GR_ 28 File(s) 1,171,120 bytes 0 Dir(s) 35,840 bytes free 1,213,952 bytes total disk space. 1,178,112 bytes in 28 files. 35,840 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 70 allocation units available on disk. Disk 4: 03/10/1994 06:21a 175,110 DBLSPACE.EX# 03/10/1994 06:21a 175,092 DBLSPACE.EX^ 03/10/1994 06:21a 24,852 DBLSPACE.HL_ 03/10/1994 06:21a 1,256 DBLSPACE.IN_ 03/10/1994 06:21a 310 DBLSPACE.SY# 03/10/1994 06:21a 11,342 DELOLDOS.EX_ 03/10/1994 06:21a 6,277 DMDRVR.BI_ 03/10/1994 06:21a 18,569 EGA2.CP_ 03/10/1994 06:21a 3,883 GRAPHICS.PR_ 03/10/1994 06:21a 13,942 KEYBRD2.SY_ 03/10/1994 06:21a 172,198 MSAV.EXE 03/10/1994 06:21a 12,230 MSAV.HL_ 03/10/1994 06:21a 17,796 MSAVHELP.OV_ 03/10/1994 06:21a 11,473 MSAVIRUS.LS_ 03/10/1994 06:21a 2,075 MSTOOLS.DL_ 03/10/1994 06:21a 65,629 MWAV.EX_ 03/10/1994 06:21a 12,070 MWAV.HL_ 03/10/1994 06:21a 23,085 MWAVABSI.DL_ 03/10/1994 06:21a 10,232 MWAVDLG.DL_ 03/10/1994 06:21a 19,702 MWAVDOSL.DL_ 03/10/1994 06:21a 4,219 MWAVDRVL.DL_ 03/10/1994 06:21a 9,569 MWAVMGR.DL_ 03/10/1994 06:21a 70,797 MWAVSCAN.DL_ 03/10/1994 06:21a 3,983 MWAVSOS.DL_ 03/10/1994 06:21a 8,445 MWAVTSR.EX_ 03/10/1994 06:21a 23,380 RESTORE.EX_ 03/10/1994 06:21a 6,637 SETVER.EX_ 03/10/1994 06:21a 4,136 SIZER.EX_ 03/10/1994 06:21a 15,478 SMARTDRV.EX_ 03/10/1994 06:21a 4,355 SORT.EX_ 03/10/1994 06:21a 2,930 SPATCH.BAT 03/10/1994 06:21a 23,660 SSTOR.SY_ 03/10/1994 06:21a 4,794 TREE.CO_ 03/10/1994 06:21a 12,738 UNFORMAT.COM 03/10/1994 06:21a 33,046 VSAFE.CO_ 03/10/1994 06:21a 2,563 XBIOS.OV_ 36 File(s) 1,007,853 bytes 0 Dir(s) 196,096 bytes free 1,213,952 bytes total disk space. 1,017,856 bytes in 36 files. 196,096 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 383 allocation units available on disk.

MD5 Signatures:

IO SYS F8AF52471593C1E62B526533A724A187 MSDOS COM 75959BC417C19135B982F7959EE9C92A COMMAND COM 806227254DB8C006FB71A4462D02C511 VER Command: MS-DOS Version 6.21

Version History:

Superceeds MS-DOS® 2.11 through 6.20 as an in-place upgrade of an existing operating system. Like the base release of 6.21 (see for more details), this upgrade removed the DBLSPACE feature and had no disk compression. In lieu of this removal, Microsoft® included an insert stating they were "currently updating the disk compression" and the sticker on the front of the box said in small print "please allow 10-12 weeks for delivery", which turned out to be the development cycle to get MS-DOS® 6.22 to market.