Performing the Tests
The diskette Format test checks the format capability of the
diskette drive and its controller. In order to run the test, you
need a blank diskette that has been formatted using the
MS-DOS FORMAT command and that is not write-protected.
When the program prompts you to insert a diskette, insert the
newly formatted one.
Once the Diskette format test is completed successfully, you
must use the test diskette to run any of the tests in the following
table. These tests will not run properly unless the diskette has
been previously used for the Diskette format diagnostic test.
Tess requiring a specially formatted diskette
Test
Drive speed test
Random R(ead)/VV(rite) test
Sequential R(ead)/W(rite) test
Drive change line test
Function
Verifies how fast the diskette
drive rotates a diskette. A
1.2MB, W-inch diskette
drive should rotate a 1.2MB
diskette
at
360 RPM and a
360KB diskette at 300 RPM.
A 1.44MB, 31/2-inch drive
should rotate a diskette at
300 RPM. (Tolerance allowed:
one percent.)
Checks the random seek
capability of a diskette drive
by performing a random
read/write operation.
Checks the sequential seek
capability of a diskette drive
by performing a sequential
read/write operation.
Tests the status of the disk
change line that detects when
you insert or remove a
diskette from a drive.
Performing System Diagnostics
C-21
