[rescue] reset firmware password on sun blade 150

Jonathan Patschke jp at celestrion.net
Wed Mar 17 17:47:04 CDT 2010

On Wed, 17 Mar 2010, Nicolai wrote:

>  3) Remove the NVRAM
>  4) Plug the NVRAM in backwards
>  5) Apply power for 2 seconds
>  #This will erases the contents

No no no no no no no.  Do NOT do this!

If you do it with the NVRAM chip in backwards, you'll probably destroy the
NVRAM and possibly the system board.  The pinout for the ST M48T59 NVRAM
has VCC and ground diagonally opposed (pins 14 and 28).

If you can boot the system and get root, try this from Solaris:

         eeprom security-mode=none

If you can't boot the system and get root, boot the system without the
NVRAM chip, install it (correctly!) while at the OpenBoot prompt, and then
run the mkp commands.  For more information, see the FAQ:


Jonathan Patschke  ) "Oh, judge, your damn laws: the good people don't
Elgin, TX         (   need them, and the bad people don't follow them,
USA                )  so what good are they?"          --Ammon Hennacy

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