Troubleshooting - Adaptec APA-348 Installation Manual

Miniscsi plus, parallel-to-scsi host adapter
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If you share your MiniSCSI Plus adapter among
several systems or carry it for use on other sys-
tems, do not use the /M1 switch unless you are
absolutely sure that the other systems are com-
patible. Changes may take place to the system
configuration in your absence. It is better to run a
little slower than to take a chance on corrupting
your data.
Additional /M Switch Options
Switch settings /M2 and /M3 correspond to /M0 and
/M1 but force the adapter to operate in undirectional
mode. A few computers (such as the NEC Prospeed
SX/20) are incorrectly seen by the MiniSCSI Plus as
being equipped with a bidirectional parallel port,
instead of the actual unidirectional configuration.
This situation can cause data corruption, but using
/M2 (instead of /M0) or /M3 (instead of /M1) forces the
MiniSCSI Plus to use unidirectional mode and
should fix the problem.
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Troubleshooting

If you have a problem during installation, check the
items below. Be sure to read the Troubleshooting sec-
tion in the Software User Guide for other related error
messages and remedies.
Note:
nected to your MiniSCSI Plus, because your
computer does not expect to boot from a
device connected to the parallel port. There-
fore, your MiniSCSI Plus device drivers
must be loaded during the boot process from
another disk.
Make sure all cables are properly connected.
Make sure all SCSI devices have unique SCSI IDs.
Make sure the SCSI bus is correctly terminated.
Network Installations
If your computer is part of a network installation,
your printer port may be redirected to a network
You cannot boot from a device con-
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