Power Computing PowerCenter PRO User Manual page 190

Problem/Question
I'm having trouble testing
a device.
The "Sad Macintosh"
error icon appears when
booting up.
HDT will not recognize any
LUN addresses besides
LUN 0.
Computer hangs or
crashes when copying
large files or large
numbers of files on
internal SCSI bus.
System hangs when a
device is on the internal
bus of an 7500/8500/
9500, but there are no
problems when connected
to the external bus.
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Table 1. Troubleshooting
Potential Cause
HDT• PE needs more memory.
Your device might have SCSI problems,
such as improper termination, loose
cabling, and the like.
This icon means there is a problem either
with the Macintosh system software or
with system hardware.
If the numbers 0000000F 00000003 or
0000000F 0000000C appear with the Sad
Mac icon, this means there is a software
error; the error could be a corrupt driver.
The drivers on the hard disk might have
been corrupted by incorrect termination
on the SCSI bus.
Versions of Apple's SCSI Manager software
before 4.3 can't recognize LUNs.
Bug on internal SCSI bus on 7500/8500/
9500 and drives set to ID5.
Slow device or drive doesn't do
synchronous transfers right.
Hard Disk ToolKit• Personal Edition Reference Guide
Solution
Increase the HDT• PE application's memory size by using Get
Info from the Finder File Menu.
For advice on solving SCSI problems, see the table entry "Hard
Disk ToolKit•PE does not recognize a device on the SCSI bus
after bus rescan."
If the suggestions in this table don't help, refer to the manual
for your Macintosh system.
Take these steps to fix the driver:
1. Check your cabling and termination to ensure that the
problem is not SCSI-related. For advice on solving SCSI
problems, see the table entry "Hard Disk ToolKit•PE does
not recognize a device on the SCSI bus after bus rescan."
2. Use HDT• PE to update the drivers on the hard disk.
Upgrade your Mac to SCSI Manager 4.3.1 or later, if the
computer will support it. Contact Apple Computer for upgrade
information regarding its software.
Change SCSI ID so no drive is at ID 5 on the internal bus.
Turn off Allow Disconnect. For more information, refer to
Configuring a device's driver in the online manual.