Lenovo ThinkCentre M91p 4524 Hardware Maintenance Manual page 49

Function Code Failure Type
• Function Code:
Represents the feature or function within the computer.
• Failure Type:
Represents the type of error encountered.
• DeviceID:
Contains the component's unit-ID that corresponds to a fixed disk drive, removable media drive,
processor, specific RIMM, or a device on the PCI bus.
• Date:
Contains the date when the diagnostic test was run. The date is retrieved from CMOS and displayed
using the YYYYMMDD format.
• ChkDigits:
Contains a 2-digit check-digit value to ensure the following:
– Diagnostics were run on the specified date.
– Diagnostics were run on the specified computer.
– The diagnostic error code is recorded correctly.
• Text:
Description of the error.
Note: See "Diagnostic error codes" on page 49 for error code listings.
Quick and Full erase - hard disk drive
The diagnostics program offers two hard disk drive format utilities:
• Quick Erase Hard Drive
• Full Erase Hard Drive
Quick Erase Hard Drive provides a DOS utility that performs the following:
• Destroys the Master Boot Record (MBR) on the hard disk 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.
Full Erase Hard Drive provides a DOS utility that performs the following:
• Performs all the steps in Quick Erase.
• Provides a DOS utility that writes random data to all sectors of the hard disk drive.
• Provides an estimate of time to completion along with a visual representation of completion status.
• Provides messages that warn the user about a non-recoverable process.
Important: Make sure that all data is backed up before using the Quick or Full Erase functions.
To select the Quick Erase Hard Drive or Full Erase Hard Drive utility, do the following:
1. 1. Select the UTILITY option on the toolbar and press Enter.
2. Select either the QUICK ERASE or FULL ERASE HARD DISK option and follow the instructions.
DeviceID Date ChkDigits Text
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Chapter 5 Diagnostic programs
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