IBM 28L2234 - Manual (Page 53)

The computer does not recognize the CD-ReWritable drive after
the device drivers are loaded (DOS and Windows 3.X).
Check for incompatibilities among the CD-RW drive device driver and
other device drivers or other hardware in your computer. Create a
System Diskette with minimum CONFIG.SYS and AUTOEXEC.BAT
system files.
1. Before creating special CONFIG.SYS and AUTOEXEC.BAT
files, make a backup copy of these files in a preferred directory.
Type x:copy CONFIG.SYS CONFIG.IBM where x is the
directory drive letter and press Enter.
Type x:copy AUTOEXEC.BAT AUTOEXEC.IBM where x is the
directory drive letter and press Enter.
2. Create a System Diskette and copy the device drivers onto it
using the following instructions.
a. Insert a blank diskette into the diskette drive.
b. At the DOS prompt, type format a: /s and press Enter.
The /s parameter creates the System Diskette. Follow the
instructions on the screen.
c. When the format process completes, copy the
C:\IBMIDECD.SYS and C:\MSCDEX files from the hard
disk to the System Diskette.
d. Using a text editor, create a minimum CONFIG.SYS system
file on the System Diskette to support only a CD-ReWritable
drive. The following procedure uses the E text editor to
create the CONFIG.SYS file from the A prompt.
1) Type e config.sys and press Enter.
2) In the editor, type lastdrive=z and press Enter.
3) Type device=a:\ibmidecd.sys /d:ibmcd1 and
press Enter.
4) Save the CONFIG.SYS file and exit from the editor.
e. Using a text editor, create a minimum AUTOEXEC.BAT
system file on the System Diskette to support only a
CD-ReWritable drive. The following procedure uses the E
text editor to create the AUTOEXEC.BAT file from the A
prompt.
1) Type e autoexec.bat and press Enter.
2) Type a:\mscdex /d:ibmcd1 /m:1 and press Enter.
3) Save the AUTOEXEC.BAT file and exit the editor.
3. Turn off the computer and check that the System Diskette is in
the diskette drive.
4. Restart the computer (the computer will start up from the System
Diskette).
5. Observe the startup messages and check that the device driver
IBMIDECD.SYS loads. When MSCDEX loads, observe the
drive letter that the computer assigns to the CD-ReWritable drive.
Part 3: Appendixes 3-25