Reinstalling Solaris 10 on SunFire V120

Question

Hi,
I would like to get some step-by-step instruction on how to reinstall the Solaris 10 into a SunFire V120.
The situation is like this..
1. We have a ununse Sunfire V120. It was able to boot up from the HDD till the console prompt.
2. But no one know the username/password. And from the bootup message, it is running "SunOS Release 5.8 Version Generic_108528-18 64-bit".
3. I've tried going into "LOM>" prompt and do a "bootmod forth". After resetting it I was able to go into "OK" prompt.
4. When I do a "boot cdrom" it give this error message "Fast Data Access MMU Miss".
What error is this? The that I put in is the burn image of Disc1 of the Solaris 10 download from SUN.
I can use this Disc1 to reinstall my SunBlade 150.
Is there anything that I miss out for the V120 reinstallation??
Thanks a million in advance.

Answer 1

The error you observed was simply because you had halted the system
in a brute force fashion. There was still data cached in place.
"Fast data MMU Miss" is a classic console output
for "Ouch! That hurt! You hit the brakes too quickly!"
Get it to OBP once again.
Set your auto-boot variable to 'false' and reset the chassis.
It will go through a power cycle reset and automatically stop at the OK prompt.
Every data bus will be empty and you won't see that error
when you try to boot from the optical drive.
There are additional web resources for that system ...
The Sunfire V120 has a resource page in the Sun System Handbook
http://sunsolve.sun.com/handbook_pub/Systems/SunFireV120/SunFireV120.html
which included links to all its documentation.
If you need a bit of help with OBP commands,
then find the OBP4.x Command Reference Manual at Docs.Sun.Com
http://docs.sun.com/app/docs?q=816-1177
========
Then again, you could just Google for keywords "solaris root password"
and find guidance on clearing the current password to a null value.
Then you will be able to reboot the system to its current Solaris 8 environment.
( ... a woefully underpatched Solaris 8 environment, but it would still boot.)