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

Chapter 6 151
HP-UX System Recovery
“Expert” Recovery Using the Core Media
“Expert” Recovery Using the Core
Media
If your system should become so compromised or corrupt that it will not
boot at the login prompt, or the system boots, but critical files are
corrupted, adversely affecting overall system performance, it may be
useful to restore system elements with core recovery media.
Before you attempt to recover an HP-UX system, you should have the
following information about your system disk available. Note that much
of this information, including file system types, can be obtained by
accessing your online system manifest, either via Ignite-UX, or by reading
the hardcopy that came with your system:
• Revision of the HP-UX system which you are attempting to recover.
CAUTION You should only attempt to recover HP-UX systems that match the
version number of the recovery tools you are using, in the current case,
HP-UX 11.0. For example, you can use HP-UX 10.30 CORE media to
attempt to recover a 10.20 file system. Data corruption could occur if you
attempt to recover a 9.0 file system with the current recovery tools.
• The address of the root filesystem on the disk (i.e., what filesystem
you will be checking/repairing using fsck).
• The address of the bootlif path of that disk.
• What the autofile in the bootlif should contain.
• Whether you have an LVM or non-LVM system.
The more you know about the system disk and its partitioning scheme,
before you encounter major damage or corruption, the easier it will be for
you to recover.
The procedures which follow assume that both fsck and mount can be
run successfully on the system disk; otherwise, the following procedures
are not applicable.