Write, Read Check

This test checks the ability of the selected disk drive to read and write data from a diskette. The test writes to and reads from each cylinder on the diskette, starting at the center.

Select option 3 from the menu to start this test.

If you have only one diskette drive, you are prompted to exchange the Diagnostics (Reference) Disk for a blank diskette before running the test. You see these messages:

Use only a formatted blank diskette for this test. Any data present may be erased.

If using drive A, remove your Diagnostics Disk. Enter Y to start this check.

Enter N to return to the menu.

Make sure the blank, formatted diskette you prepared is in drive A, then press Y and Enter.

The program displays the current track number as each cylinder is tested. For example, with a 360KB diskette, the first message you see is:

Current track is 39

Speed Check

This test checks the revolution speed of the specified disk drive. Select option 4 from the menu to start this test. You see a message similar to this:

The disk rotation speed should be more than 294.0 rpm and less than 306.0 rpm.

Performing System Diagnostics

D-25