# iostat -En
c1t0d0           Soft Errors: 2 Hard Errors: 0 Transport Errors: 0 
Vendor: TSSTcorp Product: CDDVDW TS-T633A  Revision: SR00 Serial No:  
Size: 0.00GB <0 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 
Illegal Request: 2 Predictive Failure Analysis: 0 
c0t0d0           Soft Errors: 2 Hard Errors: 0 Transport Errors: 0 
Vendor: Sun      Product: STK RAID INT     Revision: V1.0 Serial No:  
Size: 299.56GB <299563482624 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 
Illegal Request: 2 Predictive Failure Analysis: 0 
c0t1d0           Soft Errors: 2 Hard Errors: 54 Transport Errors: 0 
Vendor: Sun      Product: STK RAID INT     Revision: V1.0 Serial No:  
Size: 898.71GB <898705128960 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 
Illegal Request: 2 Predictive Failure Analysis: 0 
#

# fsck -y /dev/dsk/c0t1d0s0
WARNING: /pci@0,0/pci8086,340a@3/pci108e,286@0/disk@1,0 (sd2):
        Error for Command: write                   Error Level: Retryable
        Requested Block: 167775                    Error Block: 167775
        Vendor: Sun                                Serial Number:             
        Sense Key: Hardware Error
        ASC: 0x0 (no additional sense info), ASCQ: 0x0, FRU: 0x0
WARNING: /pci@0,0/pci8086,340a@3/pci108e,286@0/disk@1,0 (sd2):
        Error for Command: write                   Error Level: Fatal
        Requested Block: 167775                   ** Phase 3a - Check Connectivity
** Phase 3b - Verify Shadows/ACLs
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cylinder Groups
FILESYSTEM MAY STILL BE INCONSISTENT.
107653 files, 247345348 used, 269015561 free (3913 frags, 33626456 blocks, 0.0% fragmentation)

***** FILE SYSTEM WAS MODIFIED *****
***** FILE SYSTEM IS BAD *****

***** PLEASE RERUN FSCK *****
#

# format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c0t0d0 <Sun    -STK RAID INT   -V1.0 cyl 36348 alt 2 hd 255 sec 63>
          /pci@0,0/pci8086,340a@3/pci108e,286@0/disk@0,0
       1. c0t1d0 <DEFAULT cyl 54627 alt 2 hd 255 sec 126>
          /pci@0,0/pci8086,340a@3/pci108e,286@0/disk@1,0
Specify disk (enter its number): 1
selecting c0t1d0
[disk formatted]
Warning: Current Disk has mounted partitions.
/dev/dsk/c0t1d0s0 is normally mounted on /vol1 according to /etc/vfstab. Please remove this entry to use this device.
/dev/dsk/c0t1d0s1 is currently mounted on /vol2. Please see umount(1M).


FORMAT MENU:
        disk       - select a disk
        type       - select (define) a disk type
        partition  - select (define) a partition table
        current    - describe the current disk
        format     - format and analyze the disk
        fdisk      - run the fdisk program
        repair     - repair a defective sector
        label      - write label to the disk
        analyze    - surface analysis
        defect     - defect list management
        backup     - search for backup labels
        verify     - read and display labels
        save       - save new disk/partition definitions
        inquiry    - show vendor, product and revision
        volname    - set 8-character volume name
        !<cmd>     - execute <cmd>, then return
        quit
format>