HP BA322 90087 - Manual (Page 93)

4.9.1 Setting the Boot Device
Be sure your system is set to boot by default from the disk you intend to upgrade. For OpenVMS
Alpha systems, use the SHOW BOOTDEF_DEV and SET BOOTDEF_DEV console commands
to accomplish this task. (For more information, see
Appendix A (page 167) .)
For OpenVMS Integrity server systems, HP recommends using the OpenVMS Integrity servers
Boot Manager utility (SYS$MANAGER:BOOT_OPTIONS.COM) to add shadowed system disks
in a multiple-member shadow set to the EFI boot device list and dump device list. Be sure to add
all members to both lists. For more information about setting boot options and using this utility,
see
Section B.5.2 (page 205) .
4.9.2 Creating a Nonshadowed Target Disk
Perform the steps described in this section to change one of your existing shadowed system disks
to a nonshadowed disk.
IMPORTANT: If you simply use a MOUNT/OVERRIDE=SHADOW_MEMBERSHIP command
to mount the volume to be upgraded, volume shadowing can overwrite the newly upgraded
disk with information from a prior volume that has not been upgraded.
1. Shut down all systems booted from the shadowed system disk.
2. Perform a conversational (interactive) boot (for OpenVMS Alpha systems, see Section A.1.4
(page 172) ; for OpenVMS Integrity server systems, see Section B.6.8 (page 218) ) on the system
disk you have chosen for your target disk. For OpenVMS Alpha systems, for example, enter
the following command:
>>> BOOT -FLAGS 0,1 DKA100
For OpenVMS Integrity server systems, enter the following command at the EFI Shell prompt,
where fsn: is the device associated with the system disk (such as fs1:):
Shell> fsn:\efi\vms\vms_loader.efi -flags 0,1
3. At the SYSBOOT> prompt, enter the following command to disable volume shadowing of
the system disk:
SYSBOOT> SET SHADOW_SYS_DISK 0
4. Enter the CONTINUE command to resume the boot procedure. For example:
SYSBOOT> CONTINUE
5. After the boot completes, go to Section 4.11 (page 94) .
You now have a nonshadowed system disk that you can use for the upgrade.
4.10 Backing Up the System Disk
HP strongly recommends that you make a backup copy of the system disk and, if your
configuration allows it, upgrade the backup copy. Then, if there are problems, you still have a
working system disk.
NOTE: OpenVMS Engineering has encountered cases where recovery from a failed upgrade
has been difficult, expensive, or impossible because no backup of the preupgrade system disk
was available. Various hardware or software failures or a power failure can make a partially
upgraded system disk unusable. A backup copy might be the only route to recovery. The minimal
time required to make a backup is a very wise investment.
To back up the system disk, follow these steps:
1. Shut down the system (for OpenVMS Alpha systems, see Section A.3.2 (page 183) ; for
OpenVMS Integrity server systems, see Section B.7.2 (page 224) ).
4.10 Backing Up the System Disk 93