SCF Reference Manual for the Storage Subsystem (G06.27+, H06.04+)

Managing Magnetic Disks
SCF Reference Manual for the Storage Subsystem—529937-008
7-20
Replacing the Disk Bootstrap Program on a Mirrored
Volume (NonStop S-Series Servers)
4. Replace the bootstrap program on the primary disk:
-> CONTROL DISK $SYSTEM, REPLACEBOOT $SYSTEM.SYSnn.SYSDISC
5. To facilitate recovery of a mirrored volume in the event of failure, SCF asks, Do
you want to ABORT $SYSTEM-M? Type yes.
In response to a yes reply, SCF places the mirror disk in the STOPPED state,
substate HARDDOWN and replaces the bootstrap program on the primary disk.
6. Do not start the stopped mirror disk. Load the system using the disk that has the
new bootstrap program. If the system loads properly, go to Step 7.
If the system load fails in any way:
a. Use the halt codes that are displayed in the Processor Status dialog box in
either the OSM or TSM Low-Level Link application to determine what to do
next. For descriptions of the halt codes, see the Processor Halt Codes Manual.
b. If you still cannot perform a system load after following the halt code
instructions, you can use the unchanged mirror disk to load the system.
7. Reset and start the unchanged mirror disk:
-> RESET $SYSTEM
-> START $SYSTEM
SCF automatically revives the unchanged mirror disk, updating the old bootstrap
program from the new version copied earlier to the primary disk.
Caution. If you type no, the REPLACEBOOT operation updates the diskboot file on both disks
simultaneously. Do not attempt to replace the bootstrap program on both disks of a mirrored
volume simultaneously.