Installation and Upgrade Guide
G06.24 Software Installation and Upgrade Guide—528593-005
6-1
6 Replacing the Disk Bootstrap
Microcode (Pre-G06.06)
As of the G06.06 RVU, a new disk bootstrap program is available. If you are migrating
to the G06.24 RVU from an RVU prior to G06.06, you must replace the existing disk
bootstrap microcode with this new version, as described in this section. If you update
the disk boot code, you must down the mirrored disk. The mirror should be revived as
soon as possible after performing a system load.
In this procedure, you use the SCF CONTROL DISK, REPLACEBOOT command. See
the SCF Reference Manual for the Storage Subsystem for detailed instructions and
procedures that can help you recover if the SCF CONTROL DISK, REPLACEBOOT
command fails or if the bootstrap program is unusable.
To replace the bootstrap program on the primary system disk named $SYSTEM:
1. From a TACL prompt, enter a SCF CONTROL DISK, REPLACEBOOT command.
For example:
1> scf
SCF - T9082G02 - (24SEP99) (26JUL99) - 05/04/2000 13:28:33 System
\ELI
Copyright Compaq Computer Corporation 1986 - 1999
(Invoking \ELI.$SCM.ZDSMSCM.SCFCSTM)
1-> CONTROL DISK $SYSTEM, REPLACEBOOT $SYSTEM.SYSnn.SYSDISC
where nn is the number specified during the Build/Apply phase of installing the
G06.24 RVU.
SCF asks if you are sure you want to replace the bootstrap on $SYSTEM.
2. Enter yes (Y or y) to continue.
To facilitate recovery of a mirrored volume in the event of a failure, SCF asks
whether the mirror system disk should be stopped.
3. Enter yes (Y or y) to place the mirror system disk in a STOPPED state, substate
HARDDOWN.
SCF replaces the bootstrap program on the disk that is in a STARTED state.
Note. In the next procedure, when you enter yes (Y or y) at an SCF prompt, the action occurs
immediately. No confirmation prompt is given.
Caution. To avoid the potential outage of the system disk, do not start the stopped mirror
system disk until after performing a system load with the disk that has the new bootstrap
program (see Reset and Start the Mirror System Disk (If Necessary)
on page 12-11).
Perform the system load using the updated primary $SYSTEM disk. Start the mirror system
disk only after a successful system load.