Fix! FATAL: system is not bootable, boot command is disabled

When i was trying to login through Serial Port on our RAC test machines to boot them in single user mode, i got following error i.e.

Err:

FATAL: system is not bootable, boot command is disabled

Cause:

I broke in console prompt before memory initialization completed !

Solution:

{1} ok printenv auto-boot?
auto-boot? = true
{1} ok setenv auto-boot? false
auto-boot? = false
{1} ok reset-all

cheers