Power Computing PowerCenter PRO User Manual page 189

Problem/Question
I'm having problems
updating or installing a
driver.
A hard disk isn't reading
or writing data to the disk.
Finder disk error messages
appear, such as "Can't
write to disk" or "Can't
read from disk."
My hard disk drive is
having unexplained disk
reading and writing
problems.
Chapter 5: Compatibility Notes & Troubleshooting
Table 1. Troubleshooting
Potential Cause
You might not have enough "contiguous
free space," or unpartitioned space, to
install the driver.
If the device is a removable, it might be
set to write-protect mode.
The volume might be set to be a read-only
attribute.
Your device might be having SCSI
problems.
If you have an older drive, it may have
developed bad blocks.
Your drive might be having problems with
the "Command Queuing" or "Parity
Checking" driver configurations.
Solution
Take the following steps. Try installing the driver after each
step.
NOTE: Back up your data before you begin.
1. Make sure all volumes and devices are unmounted. Close
open folders and turn off file sharing.
2. If you're updating the startup drive, startup from another
device temporarily.
3. Defragment your hard drive (try using a disk optimizer).
4. If you're running the Norton Utilities' "File Saver"
application, turn it off.
5. Use HDT• PE to reduce the size of the volume.
6. As a last resort, use "Auto Initialize" to reinitialize the
drive to contain a new driver and volume, then restore
the data.
Make sure the write-protect tab is in the write-enabled
position.
Check the attributes for the hard disk, and disable the "Read-
only" attribute if it is enabled. See Changing a Volume's
Attribute s in the online manual.
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."
To fix bad blocks, take these steps:
1. Use a disk diagnostic or repair utility.
A system software analysis program, such as Norton Disk
Doctor, can be a helpful tool for finding and fixing hard
disk problems. These types of programs are most useful
for analyzing system directory problems.
2. Back up your data, then use HDT• PE 's Test routine to scan
and remap bad blocks.
3. You can also reformat the drive to eliminate bad blocks.
You may need to disable the "Disable Certification"
checkbox to remap bad blocks during a format. Refer to
SCSI formatting options on page 150.
In the Configure Driver dialog, disable "Command Queuing
OK" or "Disable Parity."
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