Archive for the 'OBP' Category

Someone told me to look at the banner. How do I check the banner on my Sun box? What information can I get from the banner command?

Wednesday, February 13th, 2008

A: SUMMARY: 1) From wherever you are, bring the machine to the OK prompt. 2) At the OK prompt, type banner. 3) Reading and understanding banner information.

How to overclock your Sun UltraSPARC box.

Saturday, February 9th, 2008

Right off the bat, I’m going to tell you that following the tips in this tutorial is probably a bad idea. For the love of everything that is sacred, read the disclaimer page. It’s important to note that raising the clock speed of any machine (not just Sun machines) generally raises it’s heat output, so […]

“Bus Fault” when trying to probe-scsi-all on a Sun Ultra 5

Monday, February 4th, 2008

I had a customer recently call me with a “bus fault” when he was trying to probe-scsi-all from the ok prompt. On separate occasions, I had sold him an Ultra 5 and a Dual Differential SCSI card (part# 375-0006) and he had just recently installed the SCSI Card into the Ultra 5 with the aforementioned […]

Is there an OpenBoot PROM cheat sheet or reference sheet?

Saturday, July 28th, 2007

A: Ask and you shall receive. Use this handy-dandy OpenBoot PROM or OBP Reference Guide courtesy of Sun Microsystems as a refresher. I didn’t write it, but it’s about as thorough and useful as it would be if I did.

When I start up my machine, I get a message that says: ‘mfg-options’ environment variable invalid How do I fix this?

Tuesday, July 17th, 2007

A: From the OK prompt (a.k.a. OBP or OpenBoot PROM) you need to setenv mfg-options to the right value.