Replacing an Internal Disk Drive CRU

Checking For and Sparing Bad Sectors on a

Nonmirrored Disk Drive With SCF

The following instructions describe how to check for and spare bad sectors on a

replacement nonmirrored disk drive CRU before restoring data to it or allowing

applications to use it.

SCF INFO $DATA17, BAD

STORAGE - Bad Sector Information Magnetic DISK \TOYS.$DATA17

Bad Sectors Information $DATA17:

Logical Sector Address Date Detected

%H0000795C SEPTEMBER 22, 1996 15:25:12

File Name File Address Logical Sector Address

DLSYS42X.OSIMAGE 573440-573951 %H0000795C

Bad sectors are listed under Logical Sector Address. If no bad sectors are

found, skip the remaining steps on this page.

2 If the disk has bad sectors, you must spare them using the CONTROL, DISK

SPARE command:

->CONTROL $DATA17-P, SPARE %H795C

Caution: It is recommended that you all processing on the volume be

stopped before issuing the CONTROL DISK, SPARE command.

3 Use the INFO DISK, BAD command again to verify that no new bad sectors

have been introduced. (Repeat Step 1).