HP BA322 90087 - Manual (Page 324)

3. Exit DCL (log off), and then select option 1 (“Upgrade, install or reconfigure OpenVMS”)
on the main menu.
4. When you are asked whether to initialize or preserve the target disk, choose PRESERVE
(the default).
5. Continue with the installation.
J.2 Removing the Diagnostic Partition File (Integrity servers only)
To remove the diagnostic partition on an OpenVMS Integrity servers system disk and to recover
the disk space occupied, delete the file SYS$MAINTENANCE:SYS$DIAGNOSTICS.SYS and then
reset the boot block. This file can contain hardware diagnostics but is not essential for operations.
To delete the file, enter the following command:
$ DELETE SYS$MAINTENANCE:SYS$DIAGNOSTICS.SYS;*/LOG
Reset the boot block by entering the SET BOOTBLOCK command at the DCL prompt, as in the
following example, where target-disk is the device on which your target system disk is mounted:
$ SET BOOTBLOCK /PRESERVE=SIGNATURE target-disk:[VMS$COMMON.SYS$LDR]SYS$EFI.SYS
324 Alternative Ways to Initialize the System Disk