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1. Before creating special CONFIG.SYS and AUTOEXEC.BAT files, make a
backup copy of these files in a convenient directory. From a DOS
prompt, do the following:
a. Type copy CONFIG.SYS CONFIG.IBM and press Enter.
b. Type copy AUTOEXEC.BAT AUTOEXEC.IBM and press Enter.
2. Insert a blank, formatted diskette into the diskette drive.
3. Copy the CONFIG.SYS and AUTOEXEC.BAT files onto the diskette.
4. Turn off the computer and ensure that the system diskette that you
created is in the diskette drive.
5. Restart the computer (the computer starts up from the system diskette).
6. Observe the startup messages and ensure the device driver
IBMIDECD.SYS loads. When MSCDEX loads, observe the drive letter
that the computer assigns to the DVD-ROM drive.
7. Load a data disc into the loading tray; then wait until the Busy
indicator is not lit.
8. Attempt to read the disc by typing dir x:, where x is the DVD-ROM
drive assigned after the MSCDEX message.
– If the computer is able to read the disc, a conflict probably exists
among the device drivers that are loaded by the CONFIG.SYS or
AUTOXEC.BAT file. You need to resolve this device conflict. Refer to
the documentation that comes with your computer for more
information on resolving device conflicts.
– If you are unable to access the disc, you might have a hardware
problem. If you are unable to read the disc or a drive letter is not
assigned by MSCDEX, go to the next step.
9. Turn off the computer, unplug the cables from the electrical outlets for
your computer and all attached devices, and remove the computer
cover.
10. Disconnect the IDE and power cables for all IDE devices except the
DVD-ROM drive.
11. Configure the DVD-ROM drive as a master and connect it to the last
IDE connector on the primary IDE port.
12. Reinstall the computer cover. Reconnect the keyboard; plug the power
cords into electrical outlets.
13. Insert the system diskette in the diskette drive and a data disc in the
DVD-ROM drive.
14. Restart the computer.
15. Attempt to read the disc by typing dir C: (the DVD-ROM drive is
drive C: because it is the only device that is connected to the IDE port.)
– If the computer is able to read the disc, a conflict probably exists
with one of the devices that are installed on your computer. You
Appendix B. Problem solving B-3