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Tests and Subtests
Subtest 4:
Subtest 5:
Subtests 6 and 7:
Subtest 8:
Subtest 9:
Subtest 10:
2-10
increments of the selected transfer siz;e) . .
After completing the write phase, the same
area of disk is read again to verify that no
addressing problems exist.
Specifying the blocks that contain the
diagnostics will cause the diagnostics to be
overwritten.
Subtest 4 performs only the read part of
subtest 3 (see above).
disk, checking for either the default
pattern or a hex pattern that you specify.
Subtest 4 asks all the same questions that
subtest 3 asks (see above).
Subtest 5 performs random seeks to different
sectors in the disk and then reads the
sectors, checking to make sure that seek
works consistently and that the head goes to
the correct place.
specify the maximum block number and the
number of subtest repetitions (random seeks)
to execute.
Subtests 6 and 7 respectively write and read
multiple sectors to the disk from memory.
These subtests allow you to specify the area
of memory to write to disk, or, conversely,
to read from some place on the disk.
Parameters are the start address in memory,
the start block on disk, and the number of
blocks to transfer.
specifying the blocks that contain the
diagnostics overwrite the diagnostics.
Subtest 8, more a utility than a diagnostic,
allows you to specify bad blocks in the bad
block table, so that you can avoid using
known bad blocks.
specify either the track number (i.e.,
cylinder number and head number) and byte
number, physical sector, or logical block of
the bad block.
Subtest 9 forces parity errors and page
faults during a disk transfer.
verifies that the appropriate nonmaskable
interrupt (NMI) occurs and that the GSR and
BSR are functioning correctly.
Subtest 10 allows you to create the volume
home block and the bad block table.
subtest is the same as subtest 2 except that
subtest 10 does not format the disk, saving
NOTE:
Subtest 4 reads a
Subtest 5 allows you to
NOTE:
For subtest 6,
Subtest 8 asks you to
This subtest
This
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