HP-UX 11i Version 1 Installation and Update Guide, June 2004

Known Problems and Troubleshooting
Recovering a Corrupt System
Appendix B 195
Recovering a Corrupt System
If your system will not boot at the login prompt, or the system boots but
critical files are corrupt, adversely affecting system performance, it may
be useful to restore system elements from the HP-UX Install/Update/
Recovery media. If there are little or no user applications or data on the
system, the best recovery method is usually to cold-install the OS, as
explained in Chapter 5. This will erase all data and software on the root
disk.
If you wish try to preserve user data or applications on the root disk,
however, procedures are available to rebuild the OS. These “expert
recovery” procedures are explained in Chapter 11 of the Ignite-UX
Administration Guide. This guide is available on the HP-UX Instant
Information CD (which you can view via an HP-UX or Windows/NT
system), and also on this web page:
http://docs.hp.com/hpux/os/11i/oe/
Patch Required for fbackup (1M) and frecover (1M) on
SDLT320, SDLT220 and DLTvs80 Tape Drives
Patch PHCO_28998 is now available from the ITRC. PHCO_28998 fixes
defects with the fbackup and frecover commands to work with the
latest SDLT320, SDLT220 and DLTvs80 tape drives.
To download the patch:
Step 1. Go to the following URL:
http://www.itresourcecenter.hp.com
Step 2. Log in with your IT Resource Center user ID and password
Step 3. Under maintenance and support (hp products), select find individual patches
and firmware
(under the patching heading), then enter the desired patch
number
NOTE You can also download a patch using anonymous ftp on the
ftp://ftp.itrc.hp.com server.