Sponsored Content
Full Discussion: Need help with OBP.
Top Forums UNIX for Dummies Questions & Answers Need help with OBP. Post 302530892 by Perderabo on Wednesday 15th of June 2011 09:41:51 AM
Old 06-15-2011
EEPROM is electrically erasable programmable read only memory. It is used on the sparc to store a little program that runs automatically when the system turns on. The name of the program is OBP. PC's work the same way, but on a PC, the name of the program is bios. When a program is stored in EEPROM it is called firmware. NVRAM is non-volatile random access memory. On the sparc it is used by OBP to store stuff like the boot paths. Typically, OBP will read the boot path, which points to some disk, and load the boot block (very first sector). The boot block is supposed to then boot the kernel.

On a PC you can interrupt the boot process and talk to the bios. On my PC, I must hit F12, then I see a menu presented by the bios. On a sparc, all you get is a command line interface when you talk to OBP. And OBP's prompt is often just "OK>".
This User Gave Thanks to Perderabo For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

OBP saying boot is disabled??

Hi all, need your help again :P I am trying to build a server in work, and it comes up with the OBP (Open Boot Prompt) and when i try and install the cdrom "boot cdrom -s" it throws back the following error: "System is not bootable, boot command is disabled" This is trying to install... (3 Replies)
Discussion started by: SemperFi
3 Replies

2. Solaris

Enter to OBP

Hello, today i'm comment in /etc/vfstab fs /usr and my server load in SingleUser without anything commands :( How i can enter to OBP from # ? or ILOM ? I'm try CTRL+BREAK (F5) , CTRL+ALT+BREAK (F5) and #. but it's don't help me :(((( (5 Replies)
Discussion started by: jess_t03
5 Replies

3. Solaris

OBP on Solaris 10-intel

Hi All, How can I go to OBP on Solaris 10-intel? I tried doing ctrl+c or ctrl+break, it won't go to the "ok" prompt. Thanks in advance, itik (6 Replies)
Discussion started by: itik
6 Replies

4. Solaris

OBP search...

Hello experts... In OBP(OK prompt)... How can i know whole command if i know part of a command? Thanks in advance... (2 Replies)
Discussion started by: younus_syed
2 Replies

5. Solaris

OBP update

hi all i am using sun blade 150 (sparc) running solaris 5.10 on that. How can i update the OBP firmware? where cai download the latest (compatible) version for this hardware? (4 Replies)
Discussion started by: kingston
4 Replies

6. Solaris

OBP Post failing on V490

My V490 has been running solid for months and I was studying the OBP diagnostics. I enabled the following; auto-boot false diag-level max verbosoity max diag-switch max reset-all The diagnostics are erring about 5 minutes in, and it keeps reporting the same error over and over, looking... (2 Replies)
Discussion started by: Pappy52
2 Replies

7. UNIX for Dummies Questions & Answers

OBP explained.

Hi Gurus, Correct me if I am wrong. Booting an OS means loading it in memory . What is OBP in solaris. If we are typing some commands at ok> where are we actually do that. What is the difference between frimware and OBP. I know I am asking silly things but I need answers. :):) Thanks in... (4 Replies)
Discussion started by: rama krishna
4 Replies

8. Solaris

Other web/ftp OBP Versions

Hi, I looking for a versión from OBP Sun Netra V440, but I can only see that the file is on oracle.com and it´s necessary a number contract or CSI of the any customer for download this file :( , anyone know a site or ftp where I can download versions for Sun OBP ?, thank you very much ... (4 Replies)
Discussion started by: ph0b0s
4 Replies

9. Solaris

V240 no OBP or console available

Hey guys, I recently replaced the heatsinks on two different V240's. Repasted and replaced them myself. After attempting to bring them back up, there was no display coming from the KVM. I figured it was a matter of environment in OBP and attempted to get to the OK prompt from the... (20 Replies)
Discussion started by: DanielSluder
20 Replies

10. Solaris

T4-2 OBP problem

Hi can anyone help me Got a T4-2, when I try to save any enviroment varaible at the OBP for instance auto-boot false or output-device screen I get the error: Warning: Error storing configuration. No space left, check SP and other logs. Cleared the SP logs (well only ones I could find) did... (4 Replies)
Discussion started by: callmebob
4 Replies
BOOT.CONFIG(5)						      BSD File Formats Manual						    BOOT.CONFIG(5)

NAME
boot.config -- Configuration file for the boot blocks DESCRIPTION
The boot.config file contains options for the FreeBSD boot block code. When the FreeBSD boot loader runs, it searches the ``a'' slice of the boot partition for a boot.config file (as a result, slices which are missing an ``a'' partition require user intervention during the boot process). If the boot.config file is found, its contents are used as the default configuration options for the boot block code and are echoed to the system console. A valid format of this file is to put BIOS drive number, a controller type, a unit number, a partition, a kernel file name, and any other valid boot(8) option on a single line, as it is done at the ``boot:'' prompt. The options related to the boot image selection described below and all the other options available for boot.config are documented in detail in the boot(8) manual page. FILES
/boot.config parameters for the boot blocks (optional) EXAMPLES
The command: # echo "-P" > /boot.config will activate the serial console of FreeBSD. The command: # echo "1:ad(1,a)/boot/loader" > /boot.config will instruct the second stage of boot(8) on the first disk to boot with the third boot(8) stage from the second disk. The command: # echo "1:ad(1,a)/boot/loader -P" > /boot.config will do both of the above. SEE ALSO
boot(8), loader(8) AUTHORS
This manual page was written by Daniel Gerzo <danger@FreeBSD.org>. BSD
May 13, 2007 BSD
All times are GMT -4. The time now is 05:40 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy