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Destructive surface analysis, E-10 – Epson 10020 User Manual

Page 205

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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 Disk

Read/Save/Write/Read/Restore/Read

check 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:

Analysis finished.

Count of tracks flagged bad

=

n

Count of tracks with write, read errors = n
Count of good tracks

= nnn

No write,

read

error

was detected.

No data was destroyed.

Press

ENTER to return to the menu.

E-10 Physically Formatting a Hard Disk