FATAL: system is not bootable, boot command is disabled" OBP message from solaris RSC console

If you receiving error like FATAL: system is not bootable, boot command is disabled from console, then you will be unable to boot up the server. The server will be in OK prompt and you will be unable to boot in single user mode also. Normally this error is appear on systems such as a Sun Fire V880,Sun-Fire-V890


{3} ok boot
FATAL: system is not bootable, boot command is disabled


Please run the following commands.


setenv auto-boot? false
reset-all


It will then come to the ok prompt without booting automatically.
Please give "boot" command  to boot the server.


{3} ok setenv auto-boot? false


auto-boot? =            false
{3} ok reset-all
Resetting ...


Software Reset
Enabling system bus....... Done
Initializing CPUs......... Done
Initializing boot memory.. Done
Initializing OpenBoot
Probing system devices
Probing I/O buses
Probing system devices
Probing I/O buses


Sun Fire V890, No Keyboard
Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
OpenBoot 4.18.8, 32768 MB memory installed, Serial #72015210.
Ethernet address 0:14:4f:4a:dd:6a, Host ID: 844add6a.


Initializing     1MB of memory at addr        b3ffb1e000 -
Initializing    12MB of memory at addr        b3ff000000 -
Initializing 16368MB of memory at addr        b000000000 -
Initializing    16GB of memory at addr        a000000000 -


{3} ok boot
Boot device: disk0  File and args:
|
/
|

Copyright 1983-2009 Sun Microsystems, Inc.  All rights reserved.
Use is subject to license terms.
Hostname: hostsybt1
SUNW,eri0 : 100 Mbps full duplex link up
checking ufs filesystems
/dev/md/rdsk/d105: is logging.
/dev/md/rdsk/d103: is logging.
/dev/md/rdsk/d102: is logging.
/dev/md/rdsk/d104: is logging.
Reading ZFS config: done.