Installing HP-UX 11.0 and Updating HP-UX 10.x to 11.0 HP 9000 Computers Edition 1

152 Chapter 6

HP-UX System Recovery

“Expert” Recovery Using the Core Media

Automated Recovery Procedures

There are four possible expert recovery situations, each of which has its

associated recovery procedure:

• If, after a system problem, you can't get the system to the ISL>

prompt from the system disk, you will want to rebuild the bootlif on

the system disk, and install all critical ﬁles required to boot on the

root ﬁlesystem.

• If you can get the system to the ISL> prompt, but cannot boot

vmunix, the system disk is corrupted; you will want to install only the

critical ﬁles required to boot on the root ﬁlesystem.

• If you can't get to the ISL> prompt, but you know that the root ﬁle

system is good, you will want to rebuild the bootlif on the system disk.

• If you believe your kernel is corrupted, you will want to replace only

the kernel on the root ﬁlesystem.

The following subsections describe these procedures in detail.

Rebuilding the bootlif and Installing Critical

Files

Following is an example of the detailed procedure for rebuilding the

bootlif of the system disk, and for installing all the critical ﬁles necessary

to boot from the root ﬁlesystem:

1. Have the Core CD-ROM for the appropriate HP-UX ready.

2. Reset the System Processor Unit (SPU) using the reset button, or

keyswitch, as appropriate.

The console will display boot path information. If Autoboot is enabled,

the system console will eventually display the following or similar

messages:

Autoboot from primary path enabled

To override, press any key within 10 seconds.

3. Press any key before the 10 seconds elapse. The system console will

display the following prompt:

Boot from primary boot path (Y or N)?>

4. Enter n at the prompt.