Solaris 10 - hangs during boot

Power server up runs through diagnostics.
Goes to the boot section and then the bit where the cursor is spinning and thats it. Hangs completely.

Any ideas?

Sparc or x86?

You need to give a lot more information!

Do you end up with some sort of prompt after diags?

Is this a prompt that you call boot section?

Does the spinning cursor freeze? Or does it just not progress but the cursor is still spinning?

As DukeNuke2 asks, what hardware platform is it?

sparc V440

---------- Post updated at 10:38 AM ---------- Previous update was at 10:37 AM ----------

Set to autoboot in the prom so it starts to boot from the relevant disk.

Cursor spins for about 2 mins and then freezes.

And ... you've tried a boot -s? You're still not giving us much to go on.

How about the last few lines of console output with the hostname/hostid/MAC/etc removed (depending on how far it's got or what is displayed)?

Can you..............put a cd in the drive and.............

 
boot cdrom -s

Just to see if booting to single user works. Eliminate hardware problem (other than the hard drive).

I would go for a boot -sv from the ok prompt and have a look at the output...

What is the boot device displayed on the screen? Maybe it is trying to boot from network not from disks?
Was that server boots without troubles before?

@gp81.....surely a network boot attempt would eventually time-out.

The OP is saying that the spinning cursor freezes.

The only two things I can think of that would cause that are (1) hardware issue (eg, memory problem), or (2) System Controller (SC) settings corrupt and/or incorrect.

I believe all other errors would produce an error message and a crash back to the SC or OK prompt.

@hicksd8 yes, you're right, network boot should time-out.

Maybe there is a conflict between SC ip and server ip?
Are you connected to serial mgt or net mgt?

Turned out be dodgy SIMM. Removed the offending one and it boots ok now.