SCF Reference Manual for the Storage Subsystem (G06.24+, H06.03+)

Managing Magnetic Disks
SCF Reference Manual for the Storage Subsystem—529937-007
7-19
Replacing the Bootstrap Program
Replacing the Bootstrap Program
The REPLACEBOOT attribute (page 14-95) of the CONTROL DISK command
replaces the disk bootstrap program. You must replace the disk bootstrap program on
a magnetic disk in any of these cases:
•
You migrate the system to a new software RVU that has a new bootstrap program.
•
You plan to install a system disk that is incompatible with your current bootstrap
program.
•
You want to create an alternate system-load volume.
•
You cannot perform a system load from a disk that has been used on other
occasions to load the system. This error indicates that the bootstrap program is
corrupted or incompatible with the format of the target SYSnn.OSIMAGE file.
If a system failure occurs during the CONTROL DISK, REPLACEBOOT operation, the
disk bootstrap program could be unusable. This procedure can help you recover from
such a situation.
Replacing the Disk Bootstrap Program on a Mirrored Volume
(NonStop S-Series Servers)
This procedure replaces the disk bootstrap program on the primary disk of a mirrored
volume and then verifies that the disk is functional before replacing the bootstrap
program on the mirror disk.
1. Review information about the REPLACEBOOT attribute on page 14-95.
2. If the disk volume you plan to replace the bootstrap program on is not already
started, start it. This command executes a revive operation if the primary and
mirror disks are not current with each other.
-> START $SYSTEM
3. Verify the disk is started:
-> STATUS $SYSTEM-*
If the disk is in the STARTING state, substate REVIVE, wait until the revive
operation has finished before continuing to the next step. Both halves must be in
the STARTED state before proceeding.
Note. The REPLACEBOOT attribute does not apply to Integrity NonStop NS-series servers.
Instead, the bootstrap program is installed through firmware update into flash memory.
Caution. If you are replacing the disk bootstrap program on the system disk, use the
procedure described here. Do not attempt to replace the bootstrap program on both disks of a
mirrored volume simultaneously.