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SCSI boot device option unavailable on Intel S875WP1-E

Posted on 2004-10-09
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Last Modified: 2008-01-16
I need to boot off an OBDR-compliant tape drive (Compaq DLT VS 40/80 with firmware V064) that is attached to an Adaptec 2940UW SCSI adapter.

The 2940UW recognises the tape drive as a bootable CD-ROM drive (as expected) but then the Intel S875WP1-E motherboard (BIOS P16 build 55, the latest) then goes on to say "reboot and select proper boot device".

While the 2940UW BIOS is set up to allow bootable CD-ROMs, I can't make the Intel mainboard show me a SCSI boot device option; it only allows me to choose from the floppy drive, CD-ROM drive and SATA drive.

Is there any way to force the motherboard to boot from a SCSI device? (like some cheap motherboard with a Phoenix BIOS :)    ).
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Question by:edepa
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by:kiranghag
ID: 12266923
your adaptor could report the tape drive as cd-rom
but the motherboard bios is responsible for loading code off tape for booting.

havent seen any bootable tape yet..

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by:kiranghag
ID: 12266941
normally, even if the motherboard does not have option to boot from SCSI,
the scsi controller bios code takes control while system is booting.
this is when you see the name of scsi adaptor and its information while booting.

and in this case, the scsi adaptor should pass control to the tape drive and boot from it.
is your tape (media, not the drive) really bootable?
how did u made it bootable
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by:edepa
ID: 12267082
The bootable tape drive is an HP technique called One Button Disaster Recovery (OBDR) in which the tape firmware spoofs a bootable CDROM whenever it has a tape inside it containing a backup job written by software that is OBDR-compliant, like Yosemite's TapeWare.

On detecting that it has bootable code written on its tape, the OBDR-compliant tape drive pauses the controller BIOS during the POST scan, and reports itself as a bootable CDROM. So if the SCSI controller's BIOS supports bootable CDROM drives, the controller will be duped into booting off the tape. In fact, the controller BIOS happily claims it's found a bootable CDROM but then the motherboard BIOS blanks the screen, rolls through the boot devices and claims that it finds no bootable media.

As you said, the SCSI controller BIOS takes control but then control somehow goes back to the motherboard BIOS.
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by:kiranghag
ID: 12267107
thank you very much for the info...

>>As you said, the SCSI controller BIOS takes control but then control somehow goes
>>back to the motherboard BIOS.
now i doubt specifically on the tape boot code..
can u verify the tape on another machine?
the code required to boot may be corrupt and hence not letting the system to boot from it

if u have access to another such machine, u can verify the tape there.
or u can make another tape with just boot code n small backup and then try here.
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by:edepa
ID: 12267153
Well I can't try now because I've left the client's premises after working on a Saturday for eight straight hours :(   but I still have to tweak the entire procedure (it was intended to be a dry run for a disaster recovery) so I'll try out your suggestion some time next week. For now the client's seen enough of me :) !

I eventually used TapeWare to create a bootable CD to kick start the process and the entire DR proc. completed with just two interventions on my part, the first to load the bootable CD and the second because for some reason TapeWare didn't restore AD so I had to boot in AD restore mode and restore system state using the TapeWare GUI. With some tweaking it really might become a one-button thing.


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by:kiranghag
ID: 12267200
all the best...keep me updated if u dnt mind
:-)

enjoy weekend..
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by:edepa
ID: 12747170
I'm sorry I didn't reply to your previous mail, TheLearnedOne. Please excuse me.

The TapeWare software  bundled free with the HP-Compaq drive eventually emerged as lacking a number of options, including Open File Management (OFM) and Exchange backup & restore, which made the intention of the bootable SCSI device irrelevant.

I am posting a request to close this question in Community Support.
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by:kiranghag
ID: 12748356
glad your problem got solved.

to close a question, you can award the points to the post which helped.
if you dont want to award points, but still wish to close the system, you can post a zero point question in the "cleanup" or "community support" area
if you want to get rid of the question altogether, please post such request in the above mentioned areas.

dont forget to put the question link in the request

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modulo earned 0 total points
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modulo
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