This document describes the causes for LED 551, 555, or 557 during IPL on a RS/6000. Also outlined is a recovery procedure. This document applies to AIX V4.
The known causes of an LED 551, 555, or 557 during IPL on an RS/6000 are:
To diagnose and fix the problem, boot from bootable media, run logform on /dev/hd8, and run fsck to fix any file systems that may be corrupted.
WARNING: Do not use this document if the system is a /usr client, diskless client, or dataless client.
The bootable media can be any one of the following:
Follow the screen prompts to the following menu:
Welcome to Base Operating System Installation and Maintenance
The next screen displays a warning that indicates you will not be able to return to Base OS menu without rebooting.
The next screen displays information about all volume groups on the system.
If you get errors indicating that a physical volume is missing from the rootvg, run diagnostics on the physical volumes to find out if you have a bad disk. Do not continue with the rest of the steps in this document.
If you get other errors from the above option, do not continue with the rest of the steps in this document. Correct the problem causing the error. If you need assistance correcting the problem, contact one of the following:
Answer yes when asked if you want to destroy the log.
fsck -y /dev/hd1 fsck -y /dev/hd2 fsck -y /dev/hd3 fsck -y /dev/hd4 fsck -y /dev/hd9var
cd /sbin/helpers ls -l v3fshelper*
If you have only one version of the v3fshelper file (for example, v3fshelper), proceed to step 8.
If there is a version of v3fshelper marked as original (for example, v3fshelper.orig), run the following commands:
copy v3fshelper v3fshelper.afs copy v3fshelper.orig v3fshelper
lslv -m hd5
WARNING: Do not proceed further if the system is a /usr client, diskless client, or dataless client.
bosboot -a -d /dev/hdisk# bootlist -m normal hdisk#
copy v3fshelper.afs v3fshelper
If you followed all of the preceding steps and the system still stops at an LED 551, 555, or 557 during a reboot in normal mode, you may want to pursue further system recovery assistance from one of the following:
For reasons of time and the integrity of your AIX operating system, the best alternative at this point may be to reinstall AIX.