Technical data
Using BACKUP
11.17 Backing Up and Restoring the System Disk
How to Perform This Task
To perform a disk-to-disk image backup, use the following procedure:
1. Obtain a disk with enough storage capacity to use for the backup. Make
sure the disk does not contain files you need, because standalone BACKUP
initializes the output disk.
2. Determine the device name of the system disk you are backing up. (See
Section 8.2 for information about determining the names of your devices.) To
display the device name of the system disk you are booted from, enter the
DCL command SHOW LOGICAL SYS$SYSDEVICE.
3. Depending on your configuration, either boot standalone BACKUP or start
the menu system:
• If you have access to the OpenVMS Alpha or VAX operating system
distribution compact disc, start the menu system described in
Section 11.17.1.
• If you do not have access to the OpenVMS VAX operating system
distribution compact disc, boot standalone BACKUP as described in
either Section 11.17.2.2 or Section 11.17.2.4.
4. Enter the BACKUP command in the following format:
BACKUP/IMAGE/VERIFY input-specifier: output-specifier:
where:
• input-specifier is the device name of the system disk.
• output-specifier is the device name of the drive that you want to hold the
backup copy.
For example:
$ BACKUP/IMAGE/VERIFY DUA0: DUA1:
5. BACKUP displays the following message, which indicates that it has
transferred the files and is verifying the accuracy of the backup copy:
%BACKUP-I-STARTVERIFY, starting verification pass
6. If you are using standalone BACKUP, when the backup is finished the system
displays the following message:
%BACKUP-I-PROCDONE, Operation completed. Processing finished at 19-MAY-2000
15:30. If you do not want to perform another standalone BACKUP operation,
use the console to halt the system.
If you do want to perform another standalone BACKUP operation,
ensure the standalone application volume is online and ready.
Enter "YES" to continue:
Continue with step 8.
7. If you are using the menu system, the DCL prompt appears after the backup
is finished. Log out and choose the shutdown option from the menu.
8. You can use the backup output disk as the system disk. Files are stored
contiguously on the output disk, eliminating disk fragmentation.
9. Store the original system disk.
10. Halt the system.
Using BACKUP 11–63