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Nero BackItUp ImageTool

12.5 Verifying a Drive Backup

Nero BackItUp ImageTool can be used to verify an existing drive backup. Nero BackItUp Im-

ageTool verifies whether the backup can be used to restore successfully. The data integrity

is checked. The backup is also checked against the source data. If you perform the verifica-

tion immediately after the backup and no data has changed in the meantime, you can use

the function for data verification.

To verify a backup, proceed as follows:

1. Click the Verify button.

 The Verify Wizard window opens and the welcome screen appears.

2. Click the Next button.

 The Verify Settings screen appears.

3. Click the button.

4. The File window opens.

5. Select a drive backup and click the OK button.

 The File window closes. The selected backup is transferred and the name of the backup

is shown in the Select Backup display panel.

6. If you want to compare the CRC checksum of the backed up drive with the CRC checksum

of the original drive, select the Verify by CRC option button.

7. If you want to compare the original drive with the backup sector-by-sector, select the Sector

by Sector option button.

Calculation of the CRC

checksum takes longer than the sector comparison,

however it usually supplies more precise results.

8. Select the appropriate hard drive or partition from the lower area.

9. Click the Verify button.

 The Verify Process screen appears. You can track the progress of the verification via

the progress bar and the messages.

10. After successful verification a dialog box opens, showing the result of the verification.

The message "The data verification process has been completed successfully"

means that the verified backup is error-free and is suitable for restoring.

If the message "Data verification has failed" appears, there is no guarantee that

the verified backup is suitable for a restore process. There can be several rea-

sons, e.g. the backup file can have errors or there is no data on the computer

for a comparison.

11. Click the OK button.

 You have verified a drive backup.

Nero BackItUp