The purpose of this article is to demonstrate how to disable the self imposed 4GB memory limit on 32 Bit (x86) versions of Windows Vista and Windows 7. If your wondering why I said 'self imposed', its because the 4GB limit is not a limitation of the 32 Bit operating mode on modern x86 CPU's. Windows 7 Forums is the largest help and support community, providing friendly help and advice for Microsoft Windows 7 Computers such as Dell, HP, Acer, Asus or a custom build. Some information. 4gb memory patch for 32 bit software - Page 2 - Windows 7 Help Forums. Kadang-kadang malah sistem Windows 32-bit membaca 3,5GB memory usable yang artinya Windows hanya menggunakan RAM 3.5GB. Padahal memory RAM yang kamu pasang 4GB, lalu sisanya lari kemana? Kadang-kadang sisa memory RAM tersebut dialokasikan untuk memory lain, misalnya ke memory fisik RAM atau Video Graphic Card. In round numbers XP, Vista and Windows 7 32-Bit Versions of the Operating System can only address 4GB. Does not matter how much memory you have installed 4GB is the max. From that max your video card has XXXMB of ram on the card so that limits the operating system to 4GB minus the cards XXXMB of memory. Re: langtitle=frRe: 4GB (3GB usable ) in windows 7 32 bit/langtitle If you're not in a hurry with complex stuff like video editing, games running multiple ram intensive programs. I've got 64 bit with 8 G ram and will never go back to 32 bit. I used a converter program from VMware and it used almost 6 G by itself.
I have this old Win7 32-bit laptop with 4 GB of RAM, but it was only able to use about 2.9 GB, the rest was 'reserved for hardware'. Recently I came across an interesting article by Raymond.CC 'Make Windows 7, 8 and Vista 32-bit (x86) Support More Than 4GB Memory' and PatchPae2 by Wen Jia Liu aka wj32, which should enable PAE up to 128 GB for all current 32-bit Windows versions.
However, the patch of my current Windows 7 SP1
winload.exe
version 6.1.7601.23569 failed, so I fixed it.The result: PatchPae2.exe
Source and install instructions
Source and install instructions
How To Remove 4gb Ram Patch For Windows 7 32-bit Iso
I looked into wj32's code and disassembled my
winload.exe
. Apparently it has changed in revision 23569. The original patch was for ImgpLoadPEImage
, but I decided it would be more robust to patch the end of ImgpValidateImageHash
. The offsets may change, but it is probably easier to maintain, as the error code C0000428h
should stay constant.I took inspiration and revision check from Elbandi. The source and executable are on github. I built it with Visual Studio 2017 Community Edition along with the great Process Hacker.
How To Remove 4gb Ram Patch For Windows 7 32-bit 64-bit
My laptop is 8 years old HP 6730b, very solid, supports x64 and PAE (Physical Address Extension), but will not run Windows 10 without ugly graphic driver issues. Still it has at least 2 years of future, until Microsoft ceases to support Windows 7. I do not feel like switching to 64 bits. PatchPae works like a charm, no issues so far, using current Intel HD drivers.
How To Remove 4gb Ram Patch For Windows 7 32-bit Windows 10
You need to be aware, that the checksum verification of both loader and kernel is disabled when the patch is active. On the other hand, you can flexibly disable it per boot menu or remove it permanently from there with
msconfig.exe
.Update 18.02.2018As Satoshi64 pointed out, Microsoft updated
winload.exe
to 6.1.7601.23992. I didn't realize that, my patched loader was loading the patched kernel without any problems. I updated them both, everything seems to work fine again. The patch was still ok, I just needed to open up the version check. I updated the code on the Github and PatchPae2.exe.How To Remove 4gb Ram Patch For Windows 7 32-bit Windows 7
Meanwhile I found a way around the graphic glitches, got myself a new SSD and moved on to Windows 10 x64.