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Maintenance and Service Guide 4-21
Addendum 108431-001 (11-88) to
Manual No. 108033-003
Head Select
The Head Select selection verifies that each head
of the fixed disk drive can be accessed and is
functional.
Error Detection and Correction
The Error Detection and Correction selection
verifies that the error detection circuitry in the
fixed disk drive can properly calculate the error
correction code.
Run All the Above Tests
The Run All the Above Tests selection allows all
of the previously described Fixed Disk Drive Test
selections to run sequentially.
Read Verify
The Read Verify selection verifies that the system
can read each track of the fixed disk drive. The
program reads the entire disk and reports the
number of unusable tracks, if any.
Format Menu
The Format Menu selection provides two format
program options and two formatting features for
special applications only. The Format Menu
allows you to run the following tests selectively
on each physical drive present.
CAUTION
The fixed disk drive format selection
destroys all data on the fixed disk drive.
Before Formatting, back up all data stored
on the fixed disk drive.
The Format Menu selections available are:
□ Conditional Format
□ Unconditional Format
□ Surface Analysis
□ Change Interleave
□ Display Current Interleave