SUMMARY: SunOS 4.1.3 disk defect list question

From: Marc Gibian (
Date: Wed Sep 20 1995 - 03:27:37 CDT

-------- Original question --------------
>> I suddenly developed a need to monitor the defect lists on the disks
>> of a few SPARCstation 20s running SunOS 4.1.3 + BSM + security
>> patches. While I am able to look using the format/defect mechanism, it
>> is very important I understand when, under what conditions, and by
>> what mechanism these defect lists may change.

I got 2 people who stated that the only way the defect list changes is
through use of the format command's defect mechanism. 1 person
indicated that in addition to the format command, the OS will add a
defect if a disk get an error on writing a block if doing "slip
sectoring", or maps it if you are doing "defect mapping".

My thanks to: (David Gunn) (I hate SGIs) (Kevin Sheehan {Consulting Poster Child})

Marc S. Gibian
Telos Consulting Services phone: (617) 377-6350
PRISM/TFS email:

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