How to Identify a Defective Sector by Using Surface Analysis

1. Become superuser or assume an equivalent role.

2. Unmount the file system in the slice that contains the defective sector.

   # umount /dev/dsk/device-name

   For more information, see mount(1M).

3. Invoke the format utility.

   # format

4. Select the affected disk.

   Specify disk (enter its number):1 selecting c0t2d0: [disk formatted] Warning: Current Disk has mounted partitions.

5. Select the analyze menu.

   format> analyze

6. Set up the analysis parameters by typing setup at the analyze> prompt.

   Use the parameters shown here:

   analyze> setup Analyze entire disk [yes]? n Enter starting block number [0, 0/0/0]: 12330 Enter ending block number [2052287, 2035/13/71]: 12360 Loop continuously [no]? y Repair defective blocks [yes]? n Stop after first error [no]? n Use random bit patterns [no]? n Enter number of blocks per transfer [126, 0/1/54]: 1 Verify media after formatting [yes]? y Enable extended messages [no]? n Restore defect list [yes]? y Create defect label [yes]? y

7. Find the defect by using the read command.

   analyze> read Ready to analyze (won't harm SunOS). This takes a long time, but is interruptible with Control-C. Continue? y pass 0 2035/12/1825/7/24 pass 1 Block 12354 (18/4/18), Corrected media error (hard data ecc) 25/7/24 ^C Total of 1 defective blocks repaired.