Setting BIOS Date Early

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Setting BIOS Date Early

Postby th1r5bvn23 » 2019-8-14 @ 10:02

I have a problem when trying to set BIOS date early on my ECS K8M800-M3 board. It wouldn't accept any year earlier than 2004, however, I had to set it to 2002 and 2003 in order to get some very early versions of Windows Vista work. How can I break this limitation?
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Re: Setting BIOS Date Early

Postby frudi » 2019-8-14 @ 10:27

Try setting the date through an OS of your choice, instead of through BIOS.
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Re: Setting BIOS Date Early

Postby th1r5bvn23 » 2019-8-14 @ 10:52

frudi wrote:Try setting the date through an OS of your choice, instead of through BIOS.

I tried this in Windows XP, set the year to 2002, but after reboot it changed to 2004. The date must be set before OS installation, otherwise it will fail due to testing digital signature expires.
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Re: Setting BIOS Date Early

Postby chinny22 » 2019-8-14 @ 14:19

Dos boot disk/USB?
I'm not sure about Vista, but Shift F10 in windows 7 setup drops you to a command prompt, say at the partition screen, if that works you could run the time command before setup starts installing?
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Re: Setting BIOS Date Early

Postby th1r5bvn23 » 2019-8-14 @ 14:54

chinny22 wrote:Dos boot disk/USB?
I'm not sure about Vista, but Shift F10 in windows 7 setup drops you to a command prompt, say at the partition screen, if that works you could run the time command before setup starts installing?

Very early versions of Vista still use XP-style text-based installer and verify digital signature after first reboot. They're not like later Vista or 7 employing RE to run installer. I'm thinking about modifying BIOS to get early years but have no idea about how to do it.
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Re: Setting BIOS Date Early

Postby cyclone3d » 2019-8-14 @ 16:14

I'm guessing you are trying to install some beta version of Vista that has a hard coded expiration date?
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Re: Setting BIOS Date Early

Postby th1r5bvn23 » 2019-8-15 @ 01:39

cyclone3d wrote:I'm guessing you are trying to install some beta version of Vista that has a hard coded expiration date?

Yes. But with post-2004 ones, the expiration date can be removed in some way. For most pre-2004 ones you can't, and the only way to get them installed is to set date back to 2003 or even 2002 depends on which version you want.
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Re: Setting BIOS Date Early

Postby bakemono » 2019-8-15 @ 03:13

What about hacking the boot sector to change the year in the CMOS before loading the OS?
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Re: Setting BIOS Date Early

Postby derSammler » 2019-8-15 @ 07:31

It's probably much easier to just hack the BIOS.
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Re: Setting BIOS Date Early

Postby th1r5bvn23 » 2019-8-15 @ 11:56

Hacking the BIOS itself should be the easiest way though... Then how can I do it? I don't have much experience modifying BIOS.
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