How do I dump my BIOS?

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Ene
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Joined: Fri Jun 05, 2020 7:41 pm

How do I dump my BIOS?

Post by Ene »

Hello, I have a late 90s computer with a Soltek SL67-EB motherboard.
It has Award BIOS on it, like basically any motherboard of that era. I tried using AWDFLASH utility for DOS, no luck there. :?
It just gives me a broken file that can't be read.

Are there any good utilities to dump Award BIOS onto a file?
Just in case, the PC runs Windows 98 SE and I started AWDFLASH under the DOS mode.
Attachments
Dumped.zip
Here is a broken output file AWDFLASH gives.
(99.15 KiB) Downloaded 38 times
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overdoze
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Joined: Tue May 08, 2018 12:04 pm

Re: How do I dump my BIOS?

Post by overdoze »

It might be possible to do it with DOS' debug utility.

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Battler
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Re: How do I dump my BIOS?

Post by Battler »

Unless you can find a way to dump high addresses (in this case, FFFC0000-FFFFFFFF) with DEBUG, I doubt it's going to be useful. On the low addresses (E0000-FFFFF), only the decompressed BIOS is there, the actual compressed blob that needs to be dumped is on the higher addresses.

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coolgamerxd
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Re: How do I dump my BIOS?

Post by coolgamerxd »

For an Award board. Use AWDFLASH.

Boot off a DOS diskette with AWDFLASH in it. Then use that command below

AWDFLASH /sy /pn

It'll ask you for a filename, give it as BIOS.BIN and it'll begin dumping your ROM.
Try it under a Windows 95 boot disk. I think 98 & ME have issues.

DEBUG referenced above will dump only 64KB of your ROM (1/2 if 1Mbit or 1/4 if 2Mbit).

If that doesn't help you, maybe Uniflash can help you getting a backup. I'll try it on my own Socket 7 board and give results here soon.
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coolgamerxd
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Re: How do I dump my BIOS?

Post by coolgamerxd »

I can confirm Uniflash works fine. It managed to dump my BIOS properly without any issue. Just throw uniflash to a folder on the C: drive, reboot to MS-DOS Mode, launch Uniflash and on it's menu select the first one talking about backup, give it a filename and your BIOS will be dumped successfully.

Uniflash link can be found there: https://www.download3k.com/System-Utili ... Flash.html
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altheos
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Joined: Fri Jun 05, 2020 7:45 pm

Re: How do I dump my BIOS?

Post by altheos »

Strangely enough Uniflash hadn't succeed dumping an old IBM I owned.
It was probably due to its proprietary BIOS.
even if it's not your case Ene, for old machines without flash BIOS, you can try NSSI : http://vogonsdrivers.com/getfile.php?fi ... enustate=0

Donald05
Posts: 1
Joined: Mon Jun 29, 2020 9:54 pm

Re: How do I dump my BIOS?

Post by Donald05 »

coolgamerxd wrote:
Fri Jun 12, 2020 11:45 am
I can confirm Uniflash works fine. It managed to dump my BIOS properly without any issue. Just throw uniflash to a folder on the C: drive, reboot to MS-DOS Mode, launch Uniflash paris shuttle airport transfers and on it's menu select the first one talking about backup, give it a filename and your BIOS will be dumped successfully.

Uniflash link can be found there: https://www.download3k.com/System-Utili ... Flash.html
Thank you very much for this uniflash link, I couldn't find it before

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