AT&T PC 6300 - Verify Surface Test

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Verify Surface Test
The Verify Surface operation is started by pressing key "6"
followed by the ENTER key on the Main Menu. This function
checks the surface of a formatted disk; detecting any defective
1 j tracks. The test will update the BTT when it finds a bad sector.
Once a bad sector of a track is found, any additional bad sectors
n found on the same track are ignored as all the sectors on the track
will be marked bad.
The test has a multiple loop capability option, which will request
from the user the number of passes to run. The default number of
retries is set at 2 in the Verify Surface Test. Therefore, after two
retries, the sector is considered bad.
Finding a bad sector (then track) during the VERIFY SURFACE
TEST doesn't cause an error to be displayed unless:
1. When the total number of bad tracks found on the HDU
exceeds the maximum permissible number, the following
message is displayed:.
TOO MANY ERRORS ON DRIVE
VERIFY SURFACE TEST FAILED
PRESS 'ENTER' KEY TO CONTINUE
This maximum number is dependent on the size of the HDU
and the algorithm is: either 64 bad tracks total, or 2 bad
tracks per megabyte of formatted storage, whichever is larger
(64 for storage up to 32 MB and for higher storage
2N megabyte/megabyte).
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