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3.11 BARD DISK
TBS~
CA~IO.:
The
contents
of
the
hard
disk will
be
erased when
subtest 02, 03, 04, 06 and 08 is run. Before running
the test, transfer the contents of the hard disk on the
floppy disk. This can be done with the MS-DOS BACKUP
command.
After
the
test,
enter
the
MS-DOS
FDISK
command, which will set the partition. Then enter the
MS-DOS
FORMAT
command.
(See
the
MS-DOS
manual
for
details.)
Subtest 01
Sequential
read
(CYL. 0-610 ,CYL. 610-0)
time: 7 minutes)
(Execution
This test performs forward reading of contents from
track
0
to
track
610
and
then
performs
reverse
reading of the contents from track 610 to track
O.
Subtest 02
Address uniquence (Execution time: 10 minutes)
This test writes the address data(sector by sector)
track by track, then reads the data and compares it
to the original data.
Following
three
kinds
of
read
operations
are
performed.
(Forward sequential, Reverse sequential, Randam)
Subtest 03
Random address/data (Execution time 48 seconds)
This
test
write
random
data
in
random
units
to
random address
(cylinder,
head,
sector)
and
then
reads the data out and compares it to the original
data.
Subtest 04
Cross talk & peak shift (Execution time: 30 seconds)
This test writes the eight types of worst pattern
data (shown below) to cylinders then reads the data
while shifting cylinder by cylinder.
Worst pattern data
10 Mbytes HOD
20 Mbytes HOD
1. B5ADAD
· ......
1. 6060
· .....
2. 4A5252
· ......
2. DBDB
· .....
3. EB6DB6
·
......
3. 6B5A
·
.....
4. 149249
·
......
4. DEF6
·
.....
5. 63B63B
·
......
5. D2CC
· .....
6. 9C49C4
·
......
6. 37B3
·
.....
7. 2DB6DB
· ......
7. 34B5
·
.....
8. 024924
·
......
8. 6DEE
·
.....
3-23
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