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1996-10-27
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OSDIREMV - REMOVING OS/2 2.X
01/24/96
=======================================================================
Removing OS/2 2.x
=======================================================================
Please Read Entire Document for Full Explanation of Procedures
--------------------------------------------------------------
DESCRIPTION
At times, it might be necessary to remove OS/2 from a system. For
example, if you have to reinstall OS/2, you should first remove the
existing operating system. If you installed OS/2 in a dual-boot
configuration, it is important to boot back to DOS before removing
OS/2. If you are unable to do this, follow the instructions provided
later in this document.
RESOLUTION
To remove the OS/2 operating system:
1. Remove any hidden files that might exist in the OS2\BITMAP directory
by typing the following. Press Enter after each.
CD OS2\BITMAP
ATTRIB -s -h aaaaa.*
ERASE aaaaa.*
2. Remove the following OS/2 specific directories:
\OS2
\SPOOL
\PSFONTS
\NOWHERE
\DESKTOP (might be DESKTOP2, DESKTOP3, ...)
\OS!2_2.0_D (OS/2 2.0 Workplace Shell directory)
3. Remove the OS/2 system files from the root directory by typing the
following. Press Enter after each.
ATTRIB -s -r -h OS2*.*
ERASE OS2*.*
ATTRIB -s -r -h EA?DATA.?SF
ERASE EA?DATA.?SF
ATTRIB -s -r -h WP?ROOT.?SF
ERASE WP?ROOT.?SF
4. Run CHKDSK to clear up any extended-attribute problems that might
occur:
a. Insert the Installation Diskette in drive A.
b. Press Ctrl+Alt+Del to restart the system.
c. When prompted, remove the Installation Diskette and insert
Diskette 1; then press Enter.
d. At the Welcome screen, press Esc to go to a command prompt.
e. Remove Diskette 1 and insert Diskette 2, which contains the
CHKDSK command.
f. Type CHKDSK x: /F and press Enter (x is drive where OS/2 is
installed.)
g. Remove the diskette from drive A and restart the system.
If you are reinstalling OS/2 2.x with the dual-boot option, you must be
able to start DOS from your hard disk before proceeding. If you need to
put DOS back on your system, you can either reinstall your DOS package,
or do the following, easier steps:
1. Start the system with a DOS bootable diskette.
2. Check the diskette for the SYS.COM file. If it isn't there, copy the
file from the DOS directory on the hard disk.
3. Type SYS C: and press Enter. (This makes the hard disk bootable
again.)
4. If you have backup copies of the DOS CONFIG.SYS and AUTOEXEC.BAT
files, copy them to the root directory, overwriting the OS/2
CONFIG.SYS and AUTOEXEC.BAT files.
If you do not have backup copies, and you installed OS/2 in a
dual-boot configuration, type the following to retrieve the files
OS/2 saved. Press Enter after each.
COPY C:\OS2\SYSTEM\CONFIG.DOS C:\CONFIG.SYS
COPY C:\OS2\SYSTEM\AUTOEXEC.DOS C:\AUTOEXEC.BAT
You should now be able to boot to DOS from the hard disk.
______________________________________________________________________
IBM disclaims all warranties, whether express or implied, including
without limitation, warranties of fitness and merchantability with
respect to the information in this document. By furnishing this
document, IBM grants no licenses to any related patents or copyrights.
Copyright (c) 1994, 1995 IBM Corporation. Any trademarks and product
or brand names referenced in this document are the property of their
respective owners. Consult your product manuals for complete trademark
information.