As root user in a terminal window, run the eeprom command without any arguments.
You should get a list of whatever items can be manipulated from up in the OS.
If nothing appears, then do eeprom -a | more (see the man pages on that system.)
Various results from a Google search for man pages suggest that some variables have been removed from Solaris 10 iterations of eeprom. Auto-boot may be one of the effected variables. If that is the case then you may have to halt the system, bring it down to the OK prompt and tackle your changes down there at the firmware level from outside the OS.
Can i try restoring the eeprom bin file from similar system & see if it works.
Your T5120 is a SPARC system.
Those values are held in the OBP, not in a file.
There is nothing to copy across.
In x86 systems there is no such PROM hardware.
Thus they are stored in a bootrc.bin file.
See the man pages for `eeprom`.
With the amount of time you have spent on this forum thread, you could have dropped the box to the OK prompt, made your modifications to the settings and rebooted to a functional system with minimal interruption.
I suggest you just leave the thread as it currently is.
You can click on "Watch this Thread" at the top of the thread page and if anyone should post anything to it in the future, you'll get an email notification to go back in and see whatever that new post might be.
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