SUMMARY: "The IDPROM contents are invalid"

From: Slamet Ahmad Fadilah <>
Date: Wed Aug 07 2002 - 20:21:25 EDT

God for shake, the chip replacement is not the only way to do.
However, to have a spare of nvram chip is highly recommended.

Many many thanks to
Christophe Dupre
Jeff Markham
Hichael Morton
and especially to Buddy Lumpkin who exactly pointed me out the other great

----- Buddy Lumpkin:
write down the ethernet address and hostid (if they are valid, all f's means
it's erased).
Let's assume the ethernet address is 8:0:20:af:b1:cc and the hostid is

Then do this:

ok 0 0 mkp
ok 8 0 20 af b1 cc 80afb1cc mkpl

(that's control+d followed by control+r)

if you still have troubles, try 1 1 mkp instead. (0 0 mkp did work on my

Your getting the message about IDPROM contents being invalid because your
checksum is hosed up. 
The mkpl command above writes the ethernet address and hostid and recreates
the checksum. 
You may need a new nvram soon.

Also there should be some variation of copy nvram to clock or something like
Just do a sifting copy or sifting clock to find the command. 
There should be a few variations, none of them will "hurt" your system. 
The command simply updates other boards in the system with the same


slamet fadilah
icm n ms tac2, siemens mobile networks

> -----Original Message-----
> Hi All,
> I just got a packet of a new SUN E4500 (sun4u machine).
> But after its first OS installation with an old OS of 2.5.1:
> It sent an error message "The IDPROM contents are invalid" which appears
> after banner (The banner looks as expected). 
> Tried to reset the NVRAM (using set-defaults or set-nvram and power cycle
> it), didn't work.
> Our sunmanagers archive says that it could be due to something wrong on
> NVRAM chip (or its battery).
> I wonder, this machine is just a new one, the NVRAM and its battery should
> be okay. 
> Any idea how to check their condition? Is there something else causing the
> problem, like a minimum OBP version to be install? Or a chip replacement
> is
> the only way to resolve this kind of problem ? 
> Many thanks for your time.
> A summary will follow.
> BR, slamet
sunmanagers mailing list
Received on Wed Aug 7 20:24:15 2002

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