Comments on: stupid BIOS tricks to find your 4G of RAM http://www.outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/ code is freedom -- patching my itch Thu, 20 Nov 2008 09:45:43 +0000 http://wordpress.org/?v=2.5.1 By: Jim http://www.outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-572 Jim Fri, 28 Sep 2007 19:31:07 +0000 http://outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-572 32-bit Windows clients are artificially limited to 4G to avoid issues with crap drivers so it doesn't matter if PAE is enabled or not, it'll never be able to see the full 4G of memory but 32-bit Windows Server and above are fine. And a 32-bit Linux kernel with PAE and HIGHMEM64G enabled will be fine as well. 32-bit Windows clients are artificially limited to 4G to avoid issues with crap drivers so it doesn’t matter if PAE is enabled or not, it’ll never be able to see the full 4G of memory but 32-bit Windows Server and above are fine. And a 32-bit Linux kernel with PAE and HIGHMEM64G enabled will be fine as well.

]]> By: Edgeman http://www.outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-571 Edgeman Thu, 27 Sep 2007 17:03:14 +0000 http://outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-571 I had the same problem with Windows (32bit and 64bt) on my ASUS P5B Deluxe, there was a memory remap feature that I had to turn on to get the BIOS to see 4 GB of ram. Also to get 64bit XP to see 4 gigs of ram. XP 32bit only saw 2 GB, unless I turned that BIOS feature off, then the BIOS and XP 32bit saw 3 GB. Supposedly PAE (on linux or windows) can get around this. I know at work here we have some gentoo servers that are 32bit that can see 4 GB of ram no problem, they have the PAE options enabled in the kernel. I could not get PAE to work on 32bit XP though. I had the same problem with Windows (32bit and 64bt) on my ASUS P5B Deluxe, there was a memory remap feature that I had to turn on to get the BIOS to see 4 GB of ram. Also to get 64bit XP to see 4 gigs of ram. XP 32bit only saw 2 GB, unless I turned that BIOS feature off, then the BIOS and XP 32bit saw 3 GB.

Supposedly PAE (on linux or windows) can get around this. I know at work here we have some gentoo servers that are 32bit that can see 4 GB of ram no problem, they have the PAE options enabled in the kernel. I could not get PAE to work on 32bit XP though.

]]> By: kees http://www.outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-570 kees Thu, 27 Sep 2007 16:29:45 +0000 http://outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-570 This was on my <a href="http://www.asus.com/products.aspx?l1=3&l2=15&l3=231&l4=0&model=768&modelmenu=1" rel="nofollow">ASUS A8N-VM</a>. If you're running the i386 kernel, I think there's no way around the problem. However, if you've got the amd64 kernel, yeah, see if there are some BIOS options for it. This was on my ASUS A8N-VM. If you’re running the i386 kernel, I think there’s no way around the problem. However, if you’ve got the amd64 kernel, yeah, see if there are some BIOS options for it.

]]> By: Jonathan http://www.outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-569 Jonathan Thu, 27 Sep 2007 16:16:13 +0000 http://outflux.net/blog/archives/2007/09/27/stupid-bios-tricks-to-find-your-4g-of-ram/#comment-569 Kees, Are you by running on a Dell laptop? I bought the extra 2 Gigs of RAM for my Dell Latitude D820 as the BIOS, Chipset, and Dell says you can run 4 Gigs of RAM, but the BIOS is only showing 3.2 Gig avaiable. Just curious if that was your problem and if I could use the same trick to get up to the full 4 gig Kees,

Are you by running on a Dell laptop? I bought the extra 2 Gigs of RAM for my Dell Latitude D820 as the BIOS, Chipset, and Dell says you can run 4 Gigs of RAM, but the BIOS is only showing 3.2 Gig avaiable.

Just curious if that was your problem and if I could use the same trick to get up to the full 4 gig

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