Monthly Archives: March 2007

Recovering T2000 ALOM Passwords

Procedure as below for reseting the T2000 ALOM password due to no scadm command available for the sun4v architecture in Solaris 10.

Recovering T2000 ALOM Passwords

For security reasons, this procedure is available only while accessing the system
directly through the serial port. The procedure resets all ALOM NVRAM settings.

To Recover Your ALOM Passwords:
1. Connect to the ALOM serial port.

2. Power down the Sun Fire T2000 Server.

Remove the power cords from both power supplies. Wait several seconds for power
to discharge before reinserting the cords.

3. Press the Escape key during ALOM boot when the following text is displayed on
the console:

Boot Sector FLASH CRC Test
Boot Sector FLASH CRC Test, PASSED.

Return to Boot Monitor for Handshake
After pressing the Escape key, the ALOM boot escape menu is printed:
ALOM Menu

e – Erase ALOM NVRAM.
m – Run POST Menu.
R – Reset ALOM.
r – Return to bootmon.
Your selection:

4. Enter e to erase the ALOM NVRAM.

Your selection: e
ALOM NVRAM erased.

ALOM Menu

e – Erase ALOM NVRAM.
m – Run POST Menu.
R – Reset ALOM.
r – Return to bootmon.
Your selection:
5. Enter r to return to the ALOM boot process.
Your selection: r

ALOM POST 1.0
Status = 00007fff

ALOM then boots and resets all NVRAM settings. You are automatically logged on
as user admin with no password and no permissions. All ALOM NVRAM settings
are reset to the factory defaults.

BTW: Make sure place the following lines in your /etc/system file for Solaris 10 which is for mandatory T2000 support.

* Begin tuning recommended for T2000
*
set pcie:pcie_aer_ce_mask=0x1
*
set autoup=900
set tune_t_fsflushr=1
set rlim_fd_max=260000
set rlim_fd_cur=260000
set sq_max_size=100
set ipge:ipge_tx_ring_size=2048
set ipge:ipge_srv_fifo_depth=16000
set ipge:ipge_reclaim_pending=32
set ipge:ipge_bcopy_thresh=512
set ipge:ipge_dvma_thresh=1
set ip:ip_squeue_fanout=1
set ipge:ipge_tx_syncq=1
*
set segkmem_lpsize=0x400000
* End tuning recommended for T2000

How to reset the power-on password on a Compaq evo n620c

Got one for free, thank you.

But it had power-on password set.

To get it removed:

1 ) find the manual on hp.com
2 ) remove battery pack
3 ) remove cover over extra memory
4 ) remove the RTC battery
5 ) Wait a couple of minutes
6 ) Start the PC on power only (no RTC and no battery pack)
7 ) When you get the error about the hard disk turn off
8 ) turn on again. Password gone
9 ) put RTC battery back, and place cover, add battery pack