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OS/2 Shareware BBS: 36 Tips
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INDBOT.FAX
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1995-01-09
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OSINDBOT - DUALBOOT PROCEDURES FOR OS/2 2.X, WARP
11/23/94
================================================================
DUALBOOT PROCEDURES for OS/2 2.X, WARP
================================================================
Please Read Entire Document for Full Explanaiton of Procedures
-----------------------------------------------------------------
This document explains how to add DUALBOOT capability to OS/2
and how to recover from the inability to boot from DOS to OS/2
or OS/2 to DOS.
----------------------------------------------------------------
USING DUAL BOOT IN OS/2 WARP
When you install OS/2 Warp, using the Easy Installation method, a
Dual Boot feature is automatically set up. Dual Boot lets you
switch back and forth between OS/2 and DOS.
Dual Boot also determines which operating system should start
when you turn on the computer. Each time you shut down and
restart, the computer starts in the operating system was last
being used. For example, if you shut down your system while
running DOS, the system starts in DOS the next time you turn on
your computer.
IF DUAL BOOT DOES NOT WORK IN OS/2 WARP:
If the BOOT command is unsuccessful when you try to switch from
DOS to OS/2, you may have programs running that take up too much
memory. If so, close the programs before you use the BOOT
command. If the programs are loaded from your AUTOEXEC.BAT file,
you should deactivate the programs before using the BOOT command.
================================================================
STARTING THE DUAL BOOT FEATURE IN OS/2 2.x, WARP:
Use the Dual Boot feuncion to switch from one operating system
to another:
- To switch from OS/2 to DOS:
1. Open OS/2 System Icon.
2. Open Command Prompts Icon.
3. Open Dual Boot Icon.
4. When a message appears asking if you want your system to
be reset, type:
Y and press Enter
- To switch from DOS to OS/2:
1. At the DOS command prompt, type:
C:\OS1\BOOT /OS2 and press Enter
================================================================
ADDING DUAL BOOT CAPABILITY TO OS/2 2.X:
Edit the CONFIG.DOS file.
1. At the command prompt, type:
E CONFIG.DOS and press Enter
2. Type the following line tin the file:
SHELL=C:DOS\COMMAND.COM /P /E:25 and press Enter
3. Save the file and close the editor.
If prompted for file type select TYPE the set PLAIN TEXT.
If CONFIG.DOS or AUTOEXEC.DOS do not exist, create them
and add the above statement.
4. From an OS/2 Full screen session, type:
CD C:\DOS and press Enter
DIR COMMAND.COM and press Enter
If COMMAND.COM does not show in the directory, use the
following command to COPY it from the root directory.
COPY C:\COMMAND.COM C:\DOS\COMMAND.COM and press Enter
BOOT /DOS and press Enter
A message appears asking if you wish to continue? Answer Y
for yes. The system restart and DOS starts.
After DOS starts go to a DOS prompt.
CD C\OS2
BOOT /OS2
A message appears asking if you wish to continue? Answer Y for
yes. System restarts and OS/2 starts.
RECOVERING DUALBOOT IN OS/2 2.X: DOS TO OS/2 OR OS/2 TO DOS
----------------------------------------------------------------
The following procedure allows recovery from the inability to
DUALBOOT from DOS to OS/2 or OS/2 to DOS. This assumes the
installation of OS/2 and DOS is completed.
PROBLEM 1: NOT ABLE TO DUALBOOT FROM OS/2 TO DOS (hangs)
PROCEDURE:
1. Start OS/2 from the hard disk.
2. Shutdown the system.
3. Insert DOS bootable diskette in drive A: and restart system.
4. Type the following commands, and press Enter after each one:
C:
COPY C:\CONFIG.SYS C:\OS2\SYSTEM\CONFIG.OS2
COPY C:\AUTOEX0EC.BAT C:\OS2\SYSTEM\AUTOEXEC.OS2
COPY C:\OS2\SYSTEM\AUTOEXEC.DOS C:\AUTOEXEC.BAT
COPY C:\OS2\SYSTEM\CONFIG.DOS C:\CONFIG.SYS
DEL C:\OS2\SYSTEM\CONFIG.DOS
DEL C:\OS2\SYSTEM\AUTOEXEC.DOS
RENAME C:\OS2\SYSTEM\BOOT.DOS C:\OS2\SYSTEM\TEMP
A:
SYS C:
5. Remove diskette from drive A: and restart the system.
NOTE: If SYS.COM can not be found in drive A:, copy it from
your \DOS subdirectory on the hard disk.
PROBLEM 2: NOT ABLE TO GO FROM DOS TO OS/2 (hangs)
PROCEDURE:
1. Start DOS from hard disk.
2. Restart system using the Installation Diskette and Diskette 1
3. Press Esc at the Welcome Screen.
4. At the A: prompt, type: C: and press Enter
5. Type the following commands, and press Enter after each one:
COPY C:\CONFIG.SYS C:\OS2\SYSTEM\CONFIG.DOS
COPY C:\AUTOEX0EC.BAT C:\OS2\SYSTEM\AUTOEXEC.DOS
COPY C:\OS2\SYSTEM\AUTOEXEC.OS2 C:\AUTOEXEC.BAT
COPY C:\OS2\SYSTEM\CONFIG.OS2 C:\CONFIG.SYS
DEL C:\OS2\SYSTEM\CONFIG.OS2
DEL C:\OS2\SYSTEM\AUTOEXEC.OS2
RENAME C:\OS2\SYSTEM\BOOT.OS2 C:\OS2\SYSTEM\TEMP
A:
SYSINSTX C:
6. Remove diskette from drive A: and restart the system.
NOTE: If SYS.COM can not be found in drive A:, copy it from
your \DOS subdirectory on the hard disk.