Epson Endeavor User Manual - Page 127

Option 2, Destructive Surface Analysis You can perform a Destructive surface analysis of your hard disk to accurately locate any bad tracks and flag them, if they are not flagged. The test writes, reads, and verifies information on every track, except those that are already flagged as bad. Caution If any errors occur during this check, all data on the track that caused the error is destroyed. If you think that an unflagged bad track is causing trouble, first run the Non-destructive surface analysis to check the disk surface. To start this test, select Destructive surface analysis from the Hard Disk Format Menu. You see these messages: Analyze Hard Disk Read/Save/Write/Read/Restore/Read check for all tracks... Current cylinder is MM As the program checks each track, it decreases the cylinder numbers until it reaches zero. When the test is complete, you see a report on the disk status, 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 = nnnn No write, read error was detected. No data was destroyed. Press ENTER to return to the menu. Formatting a Hard Disk 5-9