Troubleshooting
Backpack should not affect the operation of your existing computer software
and hardware. If there seems to be a problem using the computer or backpack
after installation, read the following problem descriptions to see if they match
the problems you are experiencing. Review the README.TXT file included on
the software diskette (see Section 2.2) and see if your problem is discussed
there. If you can't resolve the problem, review Section A.3 Technical Support.
When you are trying to access the drive, an “Invalid drive specica-
tion” message appears on the screen.
This can occur if you are not using the correct drive letter to access back-
pack. Be sure the letter you use is the one indicated on the screen when the
computer starts. Review Section 3.1 for information on drive letters.
This can also occur if you have not run SETUP to install the backpack
software or if you have not restarted the computer after running SETUP. Re-
view Section 2.2 for information on software installation.
This can also occur if there are not enough drive letters available to DOS in
your computer’s configuration. If drive letters D: and E: are already as-
signed to other devices in your computer, you will need to allow DOS to use
additional drive letters. If your CONFIG.SYS file contains a LASTDRIVE
command, change the drive letter specified to a higher letter. If your CON -
FIG.SYS file does not have a LASTDRIVE command, add the line: LAST-
DRIVE=M to the beginning of your CONFIG.SYS file on your boot drive.
The backpack drive doesn't work. The message “A backpack CD-
ROM drive was not found” appears when the computer starts.
This will occur if the power to the backpack drive is not on when the
computer is started. Make sure the backpack power switch is in the ON
position and that the power unit is plugged in securely.
This can also occur if a hardware conflict exists. Make sure you don't have
two printer cards set to the same port address, and make sure you have a
completely IBM compatible printer port.
This can also occur if the backpack CD-ROM drive’s device driver soft-
ware has difficulty programming an Enhanced Parallel Port into high-speed
mode. Review the NOEPP option in Section 3.5 backpack Device Driver
Parameters in this User’s Guide.
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