Random Boot Failures

Ok. I have an Ultra 10 that randomly fails on boot. After working with the system for a few days, here is what I know.

When the system is booting up without any intervention, the messages on the screen are:

Initializing Memory

Boot device : disk Files and args :

Sometimes it boots up, sometimes it doesn't. When it fails to boot, there is just a black box (single character size) directly beneath the B in Boot.

However, if I do a Stop-A from the console and type in the command "boot disk", the messages are:

Initializing Memory

Boot device : /pci.... Files and args:

The ... represents the complete path to the disk drive.This never fails to boot and the system comes up correctly. Shutdown works just fine because the filesystems sync and close out properly. I've never had to fsck a partition.

Anyone have any clue as to what the problem is? I thought at first that it might be a bad alias but I'm using that alias in my own boot command and it works properly. Any thoughts would be appreciated. If you need any additional information, please let me know.

[1133 byte] By [cxk6111] at [2007-11-25 23:24:20]
# 1

When you type "ok boot disk" you are telling / forcing it to do what you want. If you let it auto boot it will interogate diag-switch? and if true will boot from diag-device instead of boot-device. If diag-switch? is false then it should boot from boot-device and read boot-file, if populated. I would issue a "ok printenv" to see what boot-device is and also do a "ok devalias" to see if you have more than one alias for disk. If you have no custom aliases you might consider a "ok set-defaults" to reset your NVRAM back to factory defaults.

jds2n at 2007-7-5 18:11:23 > top of Java-index,General,Talk to the Sysop...