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Troubleshooting Symptom Charts/ Hard Drive - 55
Hard Drive
Single internal ATA
hard drive does not
spin; flashing
question mark
displays on screen
1 Check all cable connections to the hard drive.
2 Try another power connector on the power cable harness. If
the power cable is defective, replace the power supply.
3 Replace the hard drive. If the problem is resolved, make sure
the driver and system software are updated to the most recent
versions.
No internal SCSI
drives show up on the
desktop
1 Check that the drive shows up in Apple System Profiler. If it
does, go to step 2. If it does not, go to step 5.
2 Update the drivers.
3 Verify there are no duplicate SCSI device addresses on a
single SCSI bus.
4 Disconnect external SCSI devices and check for proper
termination.
5 Reseat the SCSI PCI card and verify the data cable is seated
firmly in the card and drives.
6 Check internal SCSI termination. Internal drives should not
be terminated; the SCSI cable should have termination at the
end.
7 If more than one SCSI device is on the SCSI chain, remove one
device at a time and retest. Replace the bad drive.
8 Replace the internal SCSI data cable.
9 Replace the SCSI PCI card.
10 Try another connector on the power cable harness. If there is
a bad connector on the harness, replace the power supply.
No external SCSI
drive shows up on
desktop
1 Verify there are no duplicate SCSI device addresses.
2 Verify the total cable length does not exceed the maximum
total cable length for the SCSI card. See Knowledge Base
article 58204.
3 Reseat the SCSI cable going to the SCSI card.
4 Replace the terminator on the external SCSI device.
5 Reseat the SCSI card.
6 Replace the SCSI card.
7 Replace the SCSI drive cables one at a time.
8 Disconnect the external SCSI chain. Using known-good cables,
reattach devices one at a time.