IBM B50, User Manual

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new drive, the service aid aborts if the number of bad blocks being reassigned
reaches a threshold.
The procedure for using this service aid requires that both the old and new disks 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. Once the copy is
complete, only one drive may 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 may occur when running this service aid from disk, it is
suggested that this service aid be run from the diagnostics that are loaded from
removable media when possible.
Display/Alter Sector
This selection allows the user to display and alter information on a disk sector. Care
must be used when using this service aid because inappropriate modification to
some disk sectors may result in total loss of all data on the disk. 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.
Display Configuration and Resource List
This service aid displays the item header only for all installed resources. Use this
service aid when there is no need of seeing the VPD. (No VPD is displayed.)
Display Firmware Device Node Information
This task displays the firmware device node information that appears on CHRP
platforms. The format of the output data may not be the same between different
levels of the AIX operating system. It is intended to gather more information about
individual or particular devices on the system.
Chapter 9. Introducing Tasks and Service Aids
9-13