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To use this service aid, both the old and new disks must be installed in or attached to
the system with unique SCSI addresses. This requires that the new disk drive SCSI
address must be set to an address that is not currently in use and the drive be installed
in an empty location. If there are no empty locations, then one of the other drives must
be removed. When the copy is complete, only one drive can remain installed. Either
remove the target drive to return to the original configuration, or perform the following
procedure to complete the replacement of the old drive with the new drive:
1. Remove both drives.
2. Set the SCSI address of the new drive to the SCSI address of the old drive.
3. Install the new drive in the old drive’s location.
4. Install any other drives (that were removed) into their original location.
To prevent problems that can occur when running this service aid from disk, it is
suggested that this service aid be run, when possible, from the diagnostics that are
loaded from removable media.
Display/Alter Sector
Note: Use caution when you use this service aid because inappropriate modification to
some disk sectors can result in the total loss of all data on the disk.
This selection allows the user to display and alter information on a disk sector. Sectors
are addressed by their decimal sector number. Data is displayed both in hex and in
ASCII. To prevent corrupted data from being incorrectly corrected, the service aid does
not display information that cannot be read correctly.
120 pSeries 630 Model 6C4 and Model 6E4 User’s Guide