Dear all,
one of my hard disks apparently contains bad blocks. The problem is that neither
the driver nor the disk does any automatic reallocations; nothing prevents the
system from accessing the bad blocks, leading to read errors.
I have been told that it is possible to change the setup to reallocate
R/W to bad blocks. What is the correct way to do this?
In particular:
- Is the warning
"Inquiry (3243-19MZ Q4D) and system (3243-19M) device names are different."
of the scu command significant?
- Is it enough to change ARRE and AWRE to "yes"?
Thanks for any hints,
Gernot Salzer
Some informations on the system:
* DU 4.0a
* Harddisk: Micropolis 3243 (4GB)
* scu -f /dev/rrz0c show defects primary
Warning: Inquiry (3243-19MZ Q4D) and system (3243-19M) device names are different.
Displaying Primary Defect List in Physical Sector Format
( Defect list length is 2520 bytes, containing 315 defects )
Cylinder 27, Head 8, Sector 77
......... etc etc etc ...............
* scu -f /dev/rrz0c show defects grown
Warning: Inquiry (3243-19MZ Q4D) and system (3243-19M) device names are different.
Displaying Grown Defect List in Physical Sector Format
( Defect list length is 0 bytes, containing 0 defects )
* scu -f /dev/rrz0c show pages
Warning: Inquiry (3243-19MZ Q4D) and system (3243-19M) device names are different.
Mode Parameter Header:
Mode Data Length: 123
Medium Type: 0 (Default Medium Type)
Device Specific Parameter: 0
Block Descriptor Length: 8
Mode Parameter Block Descriptor:
Density Code: 0
Number of Logical Blocks: 8388315
Logical Block Length: 512
Read-Write Error Recovery Parameters (Page 0x1 - Current Values):
Page Header / Data:
Page Code: 0x1
Parameters Savable: Yes
Page Length: 10
Disable Correction (DCR): No
Disable Transfer on Error (DTE): No
Post Recoverable Error (PER): No
Enable Early Recovery (EER): No
Read Continuous (RC): No
Transfer Block (TB): No
Automatic Read Allocation (ARRE): No
Automatic Write Allocation (AWRE): No
Read Retry Count: 14
Correction Span: 28 bits
Head Offset Count: 0
Data Strobe Offset Count: 0
Write Retry Count: 50
Recovery Time Limit: 0ms
......... etc etc etc ...............
Received on Mon Feb 10 1997 - 17:09:20 NZDT