Because you cannot upgrade
the operating system on a shadowed system disk (the upgrade will fail),
you need to disable shadowing of the system disk and perform other
operations before you can upgrade the operating system.
There are several methods for creating a nonshadowed
target disk. This section describes how to change one of your existing shadowed system disks in a multiple-member shadow
set to a nonshadowed disk that you can use as your target disk for
If you have a larger configuration with disks
that you can access physically, you might want to use a copy of the
system disk as your target disk. HP Volume Shadowing for
OpenVMS describes two methods you can use to create this
copy (using volume shadowing commands or BACKUP commands) and how
to disable volume shadowing.
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.)
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.
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
|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.|
down all systems booted from the shadowed system disk.
a conversational (interactive) boot (for
OpenVMS Alpha systems, see Section A.1.4; for OpenVMS Integrity server systems, see Section B.6.8) 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
the SYSBOOT> prompt, enter the following command to disable volume
shadowing of the system disk:
SYSBOOT> SET SHADOW_SYS_DISK 0
the CONTINUE command to resume the boot procedure. For example:
the boot completes, go to Section 4.11.
You now have a nonshadowed system disk that you
can use for the upgrade.