Quick And Full Erase - Hard Drive - IBM 6343 Hardware Maintenance Manual

If thresholds have been exceeded, an error message is shown, and the test fails. If no
SMART is supported by the drive, the test returns with "N/A".

Quick and Full erase - hard drive

The Diagnostics program offers two hard drive format utilities:
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The Quick Erase Hard Drive provides a DOS utility that performs the following steps.
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IBM : Hardware Maintenance Manual
Quick Erase Hard Drive
Full Erase Hard Drive
Destroys the Master Boot Record (MBR) on the hard drive.
Destroys all copies of the FAT Table on all partitions (both the master and
backup).
Destroys the partition table.
Provides messages that warn the user that this is a non-recoverable process.