IBM DOS Version 6.0 - Beta Release



Labels used with permission of IBM® Corporation
Labels copyright © IBM® Corporation



Labels used with permission of IBM® Corporation
Labels copyright © IBM® Corporation

Setup Screen:


Screen Copyright © IBM® Corporation

Package Contents:

Package images used with permission IBM® Corporation
Diskette envelope, 10" x 7.25", no P/N
DOS 6.0 Installation Guide (folded paper inserts, 2 pages), no P/N
Disk 1: no P/N
Disk 2: no P/N
Disk 3: no P/N
Disk 4: no P/N
Disk 5: no P/N

Collector's notes:
Rated: Extremely Rare. Difficult to locate.
Estimated Value (complete): Mint-$500 VG-$350 G-$200

Vital Statistics:

Release Date: May, 1993
Disks in Set: 5
Diskette Form Factor:5.25", DS,HD 15 sectors per track
Capacity: 1.2Mb
Sector Size: 512 bytes
Track Size: 9 sectors
Disk Sides: 2
Total Tracks: 80
File System: FAT12 floppy, FAT16 fixed disk
Files on Disk 1: 75
Files on Disk 2: 91
Files on Disk 3: 34
Files on Disk 4: 55
Files on Disk 5: 57

Version string: (Sector 0C5, offset 1B0h)



20 44 4F 53 20 56 65 72 73 69 6F 6E 20 36 2E 30 ¦  DOS Version 6.0

30 32 32 0D 0A 20 20 20 20 20 20 20 20 20 20 20 ¦ 022

20 20 28 43 29 43 6F 70 79 72 69 67 68 74 20 49 ¦   (C)Copyright I

6E 74 65 72 6E 61 74 69 6F 6E 61 6C 20 42 75 73 ¦ nternational Bus

69 6E 65 73 73 20 4D 61 63 68 69 6E 65 73 20 43 ¦ iness Machines C

6F 72 70 20 31 39 38 31 2D 31 39 39 33 2E 0D 0A ¦ orp 1981-1993.

20 20 20 20 20 20 20 20 20 20 20 20 20 28 43 29 ¦              (C)

43 6F 70 79 72 69 67 68 74 20 4D 69 63 72 6F 73 ¦ Copyright Micros

6F 66 74 20 43 6F 72 70 20 31 39 38 31 2D 31 39 ¦ oft Corp 1981-19

39 33 2E 0D 0A 28 53 70 65 63 69 66 69 65 64 20 ¦ 93. 


File Listing:

Disk 1 05/04/1993 07:16p 40,230 IBMBIO.COM 05/04/1993 07:16p 37,146 IBMDOS.COM 05/04/1993 07:16p 52,719 COMMAND.COM 05/04/1993 07:16p 18 AUTOEXEC.BAT 05/04/1993 07:16p 23 CONFIG.SYS 05/06/1993 05:21p 5,454 README.TXT 05/04/1993 07:16p 17,016 CHKDSK.COM 05/04/1993 07:16p 28,374 FDISK.COM 05/04/1993 07:16p 35,055 FORMAT.COM 05/04/1993 07:16p 9,346 SYS.COM 05/04/1993 07:16p 9,522 4201.CP_ 05/04/1993 07:16p 115 4208.CPI 05/04/1993 07:16p 6,280 ANSI.SY_ 05/04/1993 07:16p 7,728 APPEND.EXE 05/04/1993 07:16p 5,022 ASSIGN.COM 05/04/1993 07:16p 10,095 ATTRIB.EXE 05/04/1993 07:16p 1,584 CHOICE.COM 05/04/1993 07:16p 855 CMOSCLK.SYS 05/04/1993 07:16p 8,561 COMP.COM 05/04/1993 07:16p 18,142 COUNTRY.SYS 05/04/1993 07:16p 15,265 DEBUG.COM 05/04/1993 07:16p 5,350 DELTREE.EXE 05/04/1993 07:16p 7,024 DISKCOMP.COM 05/04/1993 07:16p 7,669 DISKCOPY.COM 05/04/1993 07:16p 15,277 DISPLAY.SYS 05/04/1993 07:16p 3,019 DOSHELP.HL_ 05/04/1993 07:16p 4,818 DOSKEY.COM 05/04/1993 07:16p 7,111 DRVLOCK.EXE 05/04/1993 07:16p 58,158 E.EXE 05/04/1993 07:16p 26,938 E.E_ 05/04/1993 07:16p 9,568 EDLIN.COM 05/04/1993 07:16p 58,820 EGA.CPI 05/04/1993 07:16p 3,684 EGA.SY_ 05/04/1993 07:16p 13,048 EGAX.CP_ 05/04/1993 07:16p 4,914 EHELP.HL_ 05/04/1993 07:16p 5,410 EJECT.EXE 05/04/1993 07:16p 4,967 EPS.CP_ 05/04/1993 07:16p 6,624 EXE2BIN.EXE 05/04/1993 07:16p 15,729 EXPAND.EXE 05/04/1993 07:16p 8,008 FASTOPEN.EXE 05/04/1993 07:16p 11,238 FC.EXE 05/04/1993 07:16p 5,480 FIND.EXE 05/04/1993 07:16p 8,452 HELP.EXE 05/04/1993 07:16p 8,631 HIMEM.SY_ 05/04/1993 07:16p 13,280 ISO.CP_ 05/04/1993 07:16p 9,419 JOIN.EXE 05/04/1993 07:16p 10,827 KEYB.COM 05/04/1993 07:16p 45,412 KEYBOARD.SYS 05/04/1993 07:16p 4,554 LABEL.COM 05/04/1993 07:16p 1,038 LOADFIX.COM 05/04/1993 07:16p 19,840 MEM.EXE 05/04/1993 07:16p 15,564 MODE.COM 05/04/1993 07:16p 2,443 MORE.COM 05/04/1993 07:16p 22,730 MOUSE.COM 05/04/1993 07:16p 11,904 MOVE.EXE 05/04/1993 07:16p 44,482 QCONFIG.EXE 05/04/1993 07:16p 5,586 NLSFUNC.EXE 05/04/1993 07:16p 217 PPDS.CP_ 05/04/1993 07:16p 10,072 PRINT.COM 05/04/1993 07:16p 6,471 RECOVER.CO_ 05/04/1993 07:16p 12,627 REPLACE.EXE 05/04/1993 07:16p 20,387 RESTORE.CO_ 05/04/1993 07:16p 6,195 SETVER.EX_ 05/04/1993 07:16p 4,487 SETUP.COM 05/04/1993 07:16p 85,635 SETUP1.OVL 05/04/1993 07:16p 7,354 SETUP.INI 05/04/1993 07:16p 3,184 SETUP.MSG 05/04/1993 07:16p 7,999 SHARE.EX_ 05/04/1993 07:16p 4,875 SORT.EXE 05/04/1993 07:16p 10,377 SUBST.EXE 05/04/1993 07:16p 5,200 TREE.COM 05/04/1993 07:16p 2,662 WINA20.38_ 05/04/1993 07:16p 10,148 XCOPY.EX_ 05/04/1993 07:16p 40,655 DATAMON.EXE 05/04/1993 07:16p 97,248 WNFSV1.DL_ 75 File(s) 1,151,359 bytes 0 Dir(s) 45,568 bytes free 1,213,952 bytes total disk space. 77,824 bytes in 2 hidden files. 1,090,560 bytes in 73 files. 45,568 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 89 allocation units available on disk. Disk 2 05/05/1993 08:01p 2,261 DOSSHELL.COM 05/05/1993 08:01p 138,206 DOSSHELL.EXE 05/05/1993 08:01p 49,524 DOSSHELL.HL_ 05/05/1993 08:01p 14,484 DOSSWAP.EXE 05/05/1993 08:01p 6,131 CGA.VI_ 05/05/1993 08:01p 3,129 CGA.IN_ 05/05/1993 08:01p 1,617 CGA.GR_ 05/05/1993 08:01p 6,160 EGA.VI_ 05/05/1993 08:01p 3,129 EGA.IN_ 05/05/1993 08:01p 2,466 EGA.GR_ 05/05/1993 08:01p 2,318 EGAMONO.GR_ 05/05/1993 08:01p 888 GROUP.IN_ 05/05/1993 08:01p 6,271 HERC.VI_ 05/05/1993 08:01p 1,636 HERC.GR_ 05/05/1993 08:01p 2,428 MONO.IN_ 05/05/1993 08:01p 296 MONO.GR_ 05/05/1993 08:01p 6,357 VGA.VI_ 05/05/1993 08:01p 3,142 VGA.IN_ 05/05/1993 08:01p 3,198 VGA.GR_ 05/05/1993 08:01p 3,214 VGAMONO.GR_ 05/05/1993 08:01p 74,649 DEFRAG.EXE 05/05/1993 08:01p 4,168 DEFRAG.HL_ 05/05/1993 08:01p 3,898 DRIVER.SY_ 05/05/1993 08:01p 48,903 EMM386.EX_ 05/05/1993 08:01p 11,733 GRAPHICS.COM 05/05/1993 08:01p 3,778 GRAPHICS.PR_ 05/05/1993 08:01p 10,777 INTERLNK.EX_ 05/05/1993 08:01p 26,782 INTERSVR.EXE 05/05/1993 08:01p 13,182 MEUTOINI.EXE 05/05/1993 08:01p 5,544 POWER.EX_ 05/05/1993 08:01p 10,765 PRINTER.SY_ 05/05/1993 08:01p 3,389 RAMDRIVE.SY_ 05/05/1993 08:01p 13,849 SMARTDRV.EX_ 05/05/1993 08:01p 12,749 UNFORMAT.COM 05/05/1993 08:01p 1,088 UMBCGA.SY_ 05/05/1993 08:01p 1,114 UMBMONO.SY_ 05/05/1993 08:01p 1,899 UMBHERC.SY_ 05/05/1993 08:01p 1,055 UMBEMS.SY_ 05/05/1993 08:01p 19,530 PCFORMAT.EX_ 05/05/1993 08:01p 4,724 PCMATA.SY_ 05/05/1993 08:01p 18,775 PCMCS.EX_ 05/05/1993 08:01p 1,842 PCMFDD.EX_ 05/05/1993 08:01p 3,267 PCMMTD.EX_ 05/05/1993 08:01p 10,616 PCMINFO.EXE 05/05/1993 08:01p 7,375 PCMSCD.EX_ 05/05/1993 08:01p 7,063 PCMVCD.38_ 05/05/1993 08:01p 9,000 WPCMINFO.CP_ 05/05/1993 08:01p 5,579 WPCMINFO.HL_ 05/05/1993 08:01p 14,114 PEN.EX_ 05/05/1993 08:01p 448 PENDEV.SY_ 05/05/1993 08:01p 970 PENDOS.CF_ 05/05/1993 08:01p 6,421 PINK.EX_ 05/05/1993 08:01p 4,319 PKEYUS.EX_ 05/05/1993 08:01p 3,488 PMOUSE.EX_ 05/05/1993 08:01p 1,685 PSETUP.EX_ 05/05/1993 08:01p 2,905 PSYS.EX_ 05/05/1993 08:01p 2,421 PWW.EX_ 05/05/1993 08:01p 1,483 TD3125.EX_ 05/05/1993 08:01p 1,614 TDACE5X5.EX_ 05/05/1993 08:01p 1,603 TDCALCMP.EX_ 05/05/1993 08:01p 1,527 TDEWAC.EX_ 05/05/1993 08:01p 1,628 TDKURTA.EX_ 05/05/1993 08:01p 1,431 TDMOUSE.EX_ 05/05/1993 08:01p 1,367 TDPBTOP.EX_ 05/05/1993 08:01p 1,530 TDPL100V.EX_ 05/05/1993 08:01p 1,426 TDSAMSNG.EX_ 05/05/1993 08:01p 1,506 TDSEIKO.EX_ 05/05/1993 08:01p 1,463 TDTP2521.EX_ 05/05/1993 08:01p 1,364 TDTP2523.EX_ 05/05/1993 08:01p 1,530 TDW510C.EX_ 05/05/1993 08:01p 51,342 LIMREC.EX_ 05/05/1993 08:01p 5,957 VLOAD.EX_ 05/05/1993 08:01p 612 AV.GR$ 05/05/1993 08:01p 976 BK.GR$ 05/05/1993 08:01p 664 UD.GR$ 05/05/1993 08:01p 1,250 AVBK.GR$ 05/05/1993 08:01p 927 AVUD.GR$ 05/05/1993 08:01p 1,279 BKUD.GR$ 05/05/1993 08:01p 1,537 AVBKUD.GR$ 05/05/1993 08:01p 233 IBMDOS.IC_ 05/05/1993 08:01p 200 IBMDOS.PI_ 05/05/1993 08:01p 77,763 RAMBOOST.EX_ 05/05/1993 08:01p 593 RAMBOOST.IN_ 05/05/1993 08:01p 80,576 RAMSETUP.EXE 05/05/1993 08:01p 589 RAMSETUP.IN_ 05/05/1993 08:01p 5,020 RAMSETUP.HL_ 05/05/1993 08:01p 18,094 WNGRAFIC.DL_ 05/05/1993 08:01p 65,907 WNUNDEL.EX_ 05/05/1993 08:01p 23,331 WNUNDEL.HL_ 05/05/1993 08:01p 127,406 UNDELETE.EX_ 05/05/1993 08:01p 22,611 UNDEL.HL_ 91 File(s) 1,137,058 bytes 0 Dir(s) 54,272 bytes free 1,213,952 bytes total disk space. 1,159,680 bytes in 91 files. 54,272 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 106 allocation units available on disk. Disk 3 05/05/1993 08:01p 2,037 CPB.OV_ 05/05/1993 08:01p 6,773 CPS.HL_ 05/05/1993 08:01p 17,889 CPSHELP.OV_ 05/05/1993 08:01p 103,993 LIBPCT01.DL_ 05/05/1993 08:01p 103,796 VIEW.LI_ 05/05/1993 08:01p 73,622 VIEW.OV_ 05/05/1993 08:01p 8,660 VIEW.HL_ 05/05/1993 08:01p 10,425 CPB1.OVL 05/05/1993 08:01p 8,495 CPB2.OVL 05/05/1993 08:01p 27,872 CPB3.OVL 05/05/1993 08:01p 11,881 CPB4.OVL 05/05/1993 08:01p 27,788 CPB5.OVL 05/05/1993 08:01p 4,805 CPB6.OV_ 05/05/1993 08:01p 6,780 CPBA1540.OVL 05/05/1993 08:01p 6,795 CPBA1640.OVL 05/05/1993 08:01p 61,521 CPBACKUP.HL_ 05/05/1993 08:01p 8,095 CPBACKUP.MS_ 05/05/1993 08:01p 5,248 CPBASPI.OVL 05/05/1993 08:01p 4,547 CPBCE.OVL 05/05/1993 08:01p 4,740 CPBCP.OV_ 05/05/1993 08:01p 7,171 CPBDIR.EX_ 05/05/1993 08:01p 24,154 CPBFMTB.OVL 05/05/1993 08:01p 22,837 CPBFMTR.OVL 05/06/1993 02:30p 219,580 CPBACKUP.EX_ 05/05/1993 08:01p 25,928 CPBH.OVL 05/05/1993 08:01p 11,719 CPBNWLIB.OVL 05/05/1993 08:01p 33,012 CPBQ3.OVL 05/05/1993 08:01p 29,971 CPBQ4.OVL 05/05/1993 08:01p 37,367 CPBQ5.OVL 05/05/1993 08:01p 5,137 CPBSCSI.OVL 05/05/1993 08:01p 8,905 CPBSDEV.OVL 05/05/1993 08:01p 34,435 CPBT3.OVL 05/05/1993 08:01p 30,566 CPBT4.OVL 05/05/1993 08:01p 38,686 CPBT5.OVL 34 File(s) 1,035,230 bytes 0 Dir(s) 169,984 bytes free 1,213,952 bytes total disk space. 1,043,968 bytes in 34 files. 169,984 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 332 allocation units available on disk. Disk 4 05/05/1993 08:01p 30,151 CPBV.OVL 05/05/1993 08:01p 75,600 CPBX.OVL 05/05/1993 08:01p 4,558 CPSMAIN.FN_ 05/05/1993 08:01p 268 DAILY.SE_ 05/05/1993 08:01p 289 DATABASE.SE_ 05/05/1993 08:01p 10,552 FILECHK.OVL 05/05/1993 08:01p 290 SPREAD.SE_ 05/05/1993 08:01p 52,334 NWNETAPI.DL_ 05/05/1993 08:01p 260 WEEKLY.SE_ 05/05/1993 08:01p 301 WORDPROC.SE_ 05/05/1993 08:01p 926 CPBNMI.38_ 05/05/1993 08:01p 933 CPBVXD.38_ 05/05/1993 08:01p 38,663 WNABSIO1.DL_ 05/05/1993 08:01p 5,300 WNBA1540.DL_ 05/05/1993 08:01p 5,033 WNBA1640.DL_ 05/05/1993 08:01p 275,463 WNBACKUP.EX_ 05/05/1993 08:01p 89,970 WNBACKUP.HL_ 05/05/1993 08:01p 36,382 WNBACKL.RS_ 05/05/1993 08:01p 4,247 WNBASPI.DL_ 05/05/1993 08:01p 688 WNBSEL.RS_ 05/05/1993 08:01p 2,899 WNBCE.DL_ 05/05/1993 08:01p 4,166 WNBCP.DL_ 05/05/1993 08:01p 29,833 WNBFMTR.DL_ 05/05/1993 08:01p 8,533 WNBSDEV.DL_ 05/05/1993 08:01p 70,375 WNCPS1.DL_ 05/05/1993 08:01p 3,380 WNCPS1L.RS_ 05/05/1993 08:01p 19,142 WNDOSLI1.DL_ 05/05/1993 08:01p 34,197 WNDRTRE3.DL_ 05/05/1993 08:01p 31,683 WNFB.DL_ 05/05/1993 08:01p 822 WNFBL.RS_ 05/05/1993 08:01p 18,800 WNFLBMP1.DL_ 05/05/1993 08:01p 6,770 WNFLCDR1.DL_ 05/05/1993 08:01p 20,330 WNFLCGM1.DL_ 05/05/1993 08:01p 26,712 WNFLEPS1.DL_ 05/05/1993 08:01p 7,661 WNFLEXE1.DL_ 05/05/1993 08:01p 15,040 WNFLGIF1.DL_ 05/05/1993 08:01p 2,730 WNFLHEX1.DL_ 05/05/1993 08:01p 4,465 WNFLICO1.DL_ 05/05/1993 08:01p 6,723 WNFLMSP1.DL_ 05/05/1993 08:01p 18,137 WNFLQP1.DL_ 05/05/1993 08:01p 12,413 WNFLPCX1.DL_ 05/05/1993 08:01p 7,352 WNFLPIC1.DL_ 05/05/1993 08:01p 8,101 WNFLRTF1.DL_ 05/05/1993 08:01p 26,039 WNFLTIF1.DL_ 05/05/1993 08:01p 3,620 WNFLTXT1.DL_ 05/05/1993 08:01p 18,285 WNFLWK31.DL_ 05/05/1993 08:01p 16,406 WNFLWKS1.DL_ 05/05/1993 08:01p 20,286 WNFLWPG1.DL_ 05/05/1993 08:01p 31,803 WNFLXLS1.DL_ 05/05/1993 08:01p 8,536 WNFLZIP1.DL_ 05/05/1993 08:01p 20,769 WNFR.DL_ 05/05/1993 08:01p 8,006 WNHB.DL_ 05/05/1993 08:01p 7,214 WNHR.DL_ 05/05/1993 08:01p 6,498 WNNC.DL_ 05/05/1993 08:01p 26,067 SETUP2.OVL 55 File(s) 1,186,001 bytes 0 Dir(s) 14,336 bytes free 1,213,952 bytes total disk space. 1,199,616 bytes in 55 files. 14,336 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 28 allocation units available on disk. Disk 5 05/05/1993 08:01p 36,734 WNQB.DL_ 05/05/1993 08:01p 35,286 WNQR.DL_ 05/05/1993 08:01p 40,337 WNTB.DL_ 05/05/1993 08:01p 22,526 WNTLDTH1.DL_ 05/05/1993 08:01p 43,832 WNTR.DL_ 05/05/1993 08:01p 623 WNUSER.IN_ 05/05/1993 08:01p 3,549 WNVADOS1.DL_ 05/05/1993 08:01p 25,523 WNVC1.DL_ 05/05/1993 08:01p 9,553 WNVCBIN1.DL_ 05/05/1993 08:01p 9,547 WNVCRAS1.DL_ 05/05/1993 08:01p 15,405 WNVCTBL1.DL_ 05/05/1993 08:01p 25,609 WNVCTXT1.DL_ 05/05/1993 08:01p 41,437 WNVCVEC1.DL_ 05/05/1993 08:01p 18,743 WNVE1.DL_ 05/05/1993 08:01p 4,048 WNVE1L.RS_ 05/05/1993 08:01p 6,015 WNVF1.DL_ 05/05/1993 08:01p 162 PALETTE.AV_ 05/05/1993 08:01p 175,240 IBMAVD.EX_ 05/05/1993 08:01p 2,740 IBMAVD01.HL_ 05/05/1993 08:01p 423 IBMAVD02.HL_ 05/05/1993 08:01p 522 IBMAVD03.HL_ 05/05/1993 08:01p 1,813 IBMAVD04.HL_ 05/05/1993 08:01p 1,073 IBMAVD05.HL_ 05/05/1993 08:01p 2,278 IBMAVD06.HL_ 05/05/1993 08:01p 944 IBMAVD07.HL_ 05/05/1993 08:01p 1,337 IBMAVD08.HL_ 05/05/1993 08:01p 3,229 IBMAVD09.HL_ 05/05/1993 08:01p 524 IBMAVD10.HL_ 05/05/1993 08:01p 279 IBMAVD11.HL_ 05/05/1993 08:01p 25,244 IBMAVDQ.EX_ 05/05/1993 08:01p 9,893 IBMAVSH.CO_ 05/05/1993 08:01p 78,238 IBMAVSP.EX_ 05/05/1993 08:01p 582 IBMAVDR.BA_ 05/05/1993 08:01p 222 LOCAL.MS_ 05/05/1993 08:01p 6,913 TUTORIAL.LS_ 05/05/1993 08:01p 160 AUTORUN.PR_ 05/05/1993 08:01p 715 ADMIN.PRF 05/05/1993 08:01p 226 DEFAULT.PR_ 05/05/1993 08:01p 25,218 VIRINFO.LS_ 05/05/1993 08:01p 18,362 VIRUS.LS_ 05/05/1993 08:01p 173 PRODINFO.LS_ 05/05/1993 08:01p 49,831 VIRSIG.LS_ 05/05/1993 08:01p 6,922 VERV.VD_ 05/05/1993 08:01p 402 CONTACT.LS_ 05/05/1993 08:01p 142,273 IBMAVW.EX_ 05/05/1993 08:01p 94,678 IBMAVW.HL_ 05/05/1993 08:01p 50,053 F_LOG.EX_ 05/05/1993 08:01p 267 PRODUCT.MSG 05/05/1993 08:01p 4,946 CPSCHED.EXE 05/05/1993 08:01p 2,853 CPSCHED.OV_ 05/05/1993 08:01p 1,408 SCHEDULE.EXE 05/05/1993 08:01p 2,746 SCHEDULE.HL_ 05/05/1993 08:01p 24,918 SCHEDULE.OV1 05/05/1993 08:01p 45,446 WNSCHEDL.EX_ 05/05/1993 08:01p 5,900 WNSCHEDL.HL_ 05/05/1993 08:01p 5,022 WNSCHEL.RS_ 05/05/1993 08:01p 621 RSSTUB.CO_ 57 File(s) 1,133,563 bytes 0 Dir(s) 67,072 bytes free 1,213,952 bytes total disk space. 1,146,880 bytes in 57 files. 67,072 bytes available on disk. 512 bytes in each allocation unit. 2,371 total allocation units on disk. 131 allocation units available on disk.

MD5 Signatures:

IBMBIO COM EA1F021DDE00C7FBED572F5190C39FA2 IBMDOS COM 249B639E33C8ECEBFDC80EDD7702AF38 COMMAND COM 4BA79AC541E1A06D7FCBE81489661D42 VER command: IBM DOS Version 6.00 Revision 0

Version History

IBM DOS Version 6.0 did indeed exist. However, it was not a production run for IBM but rather a developer's release to allow third party evaluation and application development. This package was the lead-up to Version 6.10.

As to be expected with a beta release, IBM DOS 6.0 had several bugs identified in the README file. These were (CHKDSK) would hang with 0 byte files; (DEFRAG) would hang if other applications were open or the DOS Shell was running the task swapper; the (E) Editor does not display all the help contents; the (MEM) command will not pause the screen on systems with BIOS dates of 1984 or earlier; PCMCIA support does not work with Yamato socket services; (SMARTDRV) has problems flushing cache before power off; and the (UNDELETE) command cannot be used with other programs active.