= nnn
Destructive Surface Analysis

Use this option to accurately locate any bad tracks on a hard disk, and to flag any bad tracks that are not flagged.

WARNING

If any errors occur during this check, all data on the track

that produces the error is destroyed. For this reason, if you think that an unflagged bad track is causing trouble, first run option 4, Non-destructive surface analysis, to check the disk

surface.

This test operates by a complex process of writing, reading, and verifying information on every track of the hard disk, except for tracks that are already flagged as bad tracks. To start the test, press 3 and then Enter. You see these messages:

Analyze Hard DiskRead/Save/Write/Read/Restore/Readcheck for all tracks...

Current cylinder is nnn

As each track is checked, the cylinder number (nnn) counts down to zero. When the analysis is complete, the program displays a complete report on the status of the disk, including a table of unflagged tracks that produced write, read errors, such as the following:

Analysisfinished.= n
Count oftracks flagged bad
Count of tracks with write, read errors = n Count of good tracksNo write, read error was detected. No data was destroyed.Press ENTER to return to the menu.
E-10Physically Formatting a Hard Disk