PS/1 - Restoring DOS 5.0 after installing IBM PC DOS 7

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Document ID: EMON-3JTJ6A

PS/1 - Restoring DOS 5.0 after installing IBM PC DOS 7

Applicable to: United States

Upon installation of the IBM PC DOS 7 upgrade, an option was given to create a Backup Diskette( IBM PC DOS 7 Set-up) during that process. You can use the Backup Diskette to remove IBM PC DOS 7.0 and restore your DOS 5.0 system.

Do Not use the Backup Diskette if you did any of the steps listed below when you first installed the DOS 7 Upgrade:

1. Repartitioned or reformatted your hard drive

2. Deleted or moved either of the two DOS hidden system files (IBMDOS.SYS and IBMBIO.SYS).

3. Installed a disk compression program. If you have done this, you need to uncompress the hard drive before the uninstall process will work.

If you created the IBM PC DOS 7.0 Set-up Backup Diskette, do the following:

a. Insert the IBM PC DOS 7.0 Set-up Diskette 1 into the A: drive.

b. Enter the following at the C:\> prompt:

A:SETUP /U

c. Follow the instructions on the screen and insert the IBM PC DOS 7.0 Set-up Backup Diskette when requested.

Search Keywords

Hint Category

DOS/Windows 3.x, Software Installation/Configuration

Date Created

09-07-97

Last Updated

22-03-99

Revision Date

22-03-2000

Brand

IBM Aptiva

Product Family

PS/1

Machine Type

2168, 2144, 2011, 2121, 2123, 2133, 2155

Model

1R2; 66P; 67P; 86P; OR8; 1R1; 1R3; 1R5; 22P; 24P; 25P; 27P; 29P; 63P; 67P; 82P; 83P; OR6; OR7; OR9; 1R0; 1R1; 26P; 62P; 2R0; P30; C01; C34; M01; NEA; T35; U35; A62; A82; A94; B82; C42; C92; G42; M82; S92; 081; 087; 131; 137; K37; N31; N81; 11E; 13T; 14C; 16E; 17A; 18A; 18T; 19C; 21C; 23C; 28A; 46M; 51D; D50; G11; G13; G43; G46; G46; G49; G49; G50; G53; M40; M40; M46; M46; P11; P13; P43; P50; P53; R04; R05; R06; R09; R38; R42; R43; R44; R84; R86; R87; RO3; S11; S13; S43; S45; S45; S47; S47; S48; S48; S50; S53; W11; W13; W42; W42; W43; W45; W45; W50; W53; 20E; 22T; 24C; 24M; 28V; 39E; 41T; 43C; 45V; 48E; 50T; 52C; 55V; 72E; 74T; 76C; 78C; 79C; 81A; 82E; 84T; 86C; 87C; CC1; D53; G14; G44; G52; G54; G72; G76; G78; G82; NM1; P14; P44; P57; P71; P74; P76; P78; P84; R14; R15; R16; R17; R18; R51; R52; R57; R58; R62; R63; R67; R71; R89; R93; R96; R97; S14; S44; S50; S54; S70; S75; S76; S78; S80; W14; W44; W48; W54; W67; W76; W77; W78; Z33; 28V; 31E; 33T; 37C; 38C; 51E; 54T; 56C; 57C; 88V; BB1; G57; G87; OR1; OR3; OR4; OR5; P89; R28; R29; R31; R74; R78; R82; R98; S55; S85; SR1; US1; W52; W82

TypeModel

21681R2; 216866P; 216867P; 216886P; 2168OR8; 21441R1; 21441R3; 21441R5; 214422P; 214424P; 214425P; 214427P; 214429P; 214463P; 214467P; 214482P; 214483P; 2144OR6; 2144OR7; 2144OR9; 21681R0; 21681R1; 216826P; 216862P; 21442R0; 2144P30; 2011C01; 2011C34; 2011M01; 2011NEA; 2011T35; 2011U35; 2121A62; 2121A82; 2121A94; 2121B82; 2121C42; 2121C92; 2121G42; 2121M82; 2121S92; 2123081; 2123087; 2123131; 2123137; 2123K37; 2123N31; 2123N81; 213311E; 213313T; 213314C; 213316E; 213317A; 213318A; 213318T; 213319C; 213321C; 213323C; 213328A; 213346M; 213351D; 2133D50; 2133G11; 2133G13; 2133G43; 2133G46; 2133G46; 2133G49; 2133G49; 2133G50; 2133G53; 2133M40; 2133M40; 2133M46; 2133M46; 2133P11; 2133P13; 2133P43; 2133P50; 2133P53; 2133R04; 2133R05; 2133R06; 2133R09; 2133R38; 2133R42; 2133R43; 2133R44; 2133R84; 2133R86; 2133R87; 2133RO3; 2133S11; 2133S13; 2133S43; 2133S45; 2133S45; 2133S47; 2133S47; 2133S48; 2133S48; 2133S50; 2133S53; 2133W11; 2133W13; 2133W42; 2133W42; 2133W43; 2133W45; 2133W45; 2133W50; 2133W53; 215520E; 215522T; 215524C; 215524M; 215528V; 215539E; 215541T; 215543C; 215545V; 215548E; 215550T; 215552C; 215555V; 215572E; 215574T; 215576C; 215578C; 215579C; 215581A; 215582E; 215584T; 215586C; 215587C; 2155CC1; 2155D53; 2155G14; 2155G44; 2155G52; 2155G54; 2155G72; 2155G76; 2155G78; 2155G82; 2155NM1; 2155P14; 2155P44; 2155P57; 2155P71; 2155P74; 2155P76; 2155P78; 2155P84; 2155R14; 2155R15; 2155R16; 2155R17; 2155R18; 2155R51; 2155R52; 2155R57; 2155R58; 2155R62; 2155R63; 2155R67; 2155R71; 2155R89; 2155R93; 2155R96; 2155R97; 2155S14; 2155S44; 2155S50; 2155S54; 2155S70; 2155S75; 2155S76; 2155S78; 2155S80; 2155W14; 2155W44; 2155W48; 2155W54; 2155W67; 2155W76; 2155W77; 2155W78; 2155Z33; 216828V; 216831E; 216833T; 216837C; 216838C; 216851E; 216854T; 216856C; 216857C; 216888V; 2168BB1; 2168G57; 2168G87; 2168OR1; 2168OR3; 2168OR4; 2168OR5; 2168P89; 2168R28; 2168R29; 2168R31; 2168R74; 2168R78; 2168R82; 2168R98; 2168S55; 2168S85; 2168SR1; 2168US1; 2168W52; 2168W82

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	Search Keywords
	Hint Category	DOS/Windows 3.x, Software Installation/Configuration
	Date Created	09-07-97
	Last Updated	22-03-99
	Revision Date	22-03-2000
	Brand	IBM Aptiva
	Product Family	PS/1
	Machine Type	2168, 2144, 2011, 2121, 2123, 2133, 2155
	Model	1R2; 66P; 67P; 86P; OR8; 1R1; 1R3; 1R5; 22P; 24P; 25P; 27P; 29P; 63P; 67P; 82P; 83P; OR6; OR7; OR9; 1R0; 1R1; 26P; 62P; 2R0; P30; C01; C34; M01; NEA; T35; U35; A62; A82; A94; B82; C42; C92; G42; M82; S92; 081; 087; 131; 137; K37; N31; N81; 11E; 13T; 14C; 16E; 17A; 18A; 18T; 19C; 21C; 23C; 28A; 46M; 51D; D50; G11; G13; G43; G46; G46; G49; G49; G50; G53; M40; M40; M46; M46; P11; P13; P43; P50; P53; R04; R05; R06; R09; R38; R42; R43; R44; R84; R86; R87; RO3; S11; S13; S43; S45; S45; S47; S47; S48; S48; S50; S53; W11; W13; W42; W42; W43; W45; W45; W50; W53; 20E; 22T; 24C; 24M; 28V; 39E; 41T; 43C; 45V; 48E; 50T; 52C; 55V; 72E; 74T; 76C; 78C; 79C; 81A; 82E; 84T; 86C; 87C; CC1; D53; G14; G44; G52; G54; G72; G76; G78; G82; NM1; P14; P44; P57; P71; P74; P76; P78; P84; R14; R15; R16; R17; R18; R51; R52; R57; R58; R62; R63; R67; R71; R89; R93; R96; R97; S14; S44; S50; S54; S70; S75; S76; S78; S80; W14; W44; W48; W54; W67; W76; W77; W78; Z33; 28V; 31E; 33T; 37C; 38C; 51E; 54T; 56C; 57C; 88V; BB1; G57; G87; OR1; OR3; OR4; OR5; P89; R28; R29; R31; R74; R78; R82; R98; S55; S85; SR1; US1; W52; W82
	TypeModel	21681R2; 216866P; 216867P; 216886P; 2168OR8; 21441R1; 21441R3; 21441R5; 214422P; 214424P; 214425P; 214427P; 214429P; 214463P; 214467P; 214482P; 214483P; 2144OR6; 2144OR7; 2144OR9; 21681R0; 21681R1; 216826P; 216862P; 21442R0; 2144P30; 2011C01; 2011C34; 2011M01; 2011NEA; 2011T35; 2011U35; 2121A62; 2121A82; 2121A94; 2121B82; 2121C42; 2121C92; 2121G42; 2121M82; 2121S92; 2123081; 2123087; 2123131; 2123137; 2123K37; 2123N31; 2123N81; 213311E; 213313T; 213314C; 213316E; 213317A; 213318A; 213318T; 213319C; 213321C; 213323C; 213328A; 213346M; 213351D; 2133D50; 2133G11; 2133G13; 2133G43; 2133G46; 2133G46; 2133G49; 2133G49; 2133G50; 2133G53; 2133M40; 2133M40; 2133M46; 2133M46; 2133P11; 2133P13; 2133P43; 2133P50; 2133P53; 2133R04; 2133R05; 2133R06; 2133R09; 2133R38; 2133R42; 2133R43; 2133R44; 2133R84; 2133R86; 2133R87; 2133RO3; 2133S11; 2133S13; 2133S43; 2133S45; 2133S45; 2133S47; 2133S47; 2133S48; 2133S48; 2133S50; 2133S53; 2133W11; 2133W13; 2133W42; 2133W42; 2133W43; 2133W45; 2133W45; 2133W50; 2133W53; 215520E; 215522T; 215524C; 215524M; 215528V; 215539E; 215541T; 215543C; 215545V; 215548E; 215550T; 215552C; 215555V; 215572E; 215574T; 215576C; 215578C; 215579C; 215581A; 215582E; 215584T; 215586C; 215587C; 2155CC1; 2155D53; 2155G14; 2155G44; 2155G52; 2155G54; 2155G72; 2155G76; 2155G78; 2155G82; 2155NM1; 2155P14; 2155P44; 2155P57; 2155P71; 2155P74; 2155P76; 2155P78; 2155P84; 2155R14; 2155R15; 2155R16; 2155R17; 2155R18; 2155R51; 2155R52; 2155R57; 2155R58; 2155R62; 2155R63; 2155R67; 2155R71; 2155R89; 2155R93; 2155R96; 2155R97; 2155S14; 2155S44; 2155S50; 2155S54; 2155S70; 2155S75; 2155S76; 2155S78; 2155S80; 2155W14; 2155W44; 2155W48; 2155W54; 2155W67; 2155W76; 2155W77; 2155W78; 2155Z33; 216828V; 216831E; 216833T; 216837C; 216838C; 216851E; 216854T; 216856C; 216857C; 216888V; 2168BB1; 2168G57; 2168G87; 2168OR1; 2168OR3; 2168OR4; 2168OR5; 2168P89; 2168R28; 2168R29; 2168R31; 2168R74; 2168R78; 2168R82; 2168R98; 2168S55; 2168S85; 2168SR1; 2168US1; 2168W52; 2168W82
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