UPGRADING REPAIRING PCs

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• MSCDEX.EXE—Copy from C:\WINDOWS\
COMMAND or your CD-ROM drive’s folder; the same
file for any CD-ROM drive.
Next, you’ll need to create a CONFIG.SYS file that will load the CD-
ROM device driver and an AUTOEXEC.BAT that will load the
MSCDEX.EXE CD-ROM extensions for MS-DOS program. Use a text
editor, such as the Windows Notepad.
Contents of CONFIG.SYS:
• DEVICE=MYCDROM.SYS /D:mscd001
• Lastdrive=M
Contents of AUTOEXEC.BAT:
• MSCDEX.EXE /d:mscd001 /m:10 /L:M
Note
Chapter 4—SCSI and IDE Hard Drives and Optical Drives
Note that the /d: switch refers to the same device name, which
could be Charlie or Kumquat or anything that matches! A mismatch
will cause the loading process to fail.
Check your computer’s BIOS setup and verify that the floppy drive
is the first bootable device. Then, restart the computer with this
floppy in drive A: and you should see the CD-ROM driver initialize.
Next, MSCDEX should assign the CD-ROM the drive letter listed
after the /L: option (M:).
If you don’t have a suitable Windows 95 disk with CD-ROM support,
a popular workaround is to use a Windows 98 or Windows
Me startup disk because they both contain the CD-ROM drivers
you need to access your CD for reinstallation of files or the entire
operating system.
Troubleshooting Optical Drives
Failure Reading a CD
If your CD-ROM drive fails to read a CD, try the following solutions:
• Check for scratches on the CD’s data surface.
• Check the drive for dust and dirt; use a cleaning CD.