what is Pshygical Adress Extension_
In computing, Physical Address Extension (PAE) is a feature to allow 32-bit x86 processors to access a physical address space (including random access memory and memory mapped devices) larger than 4 gigabytes.
First implemented in the Intel Pentium Pro in 1995, it was extended by AMD to add a level to the page table hierarchy, to allow it to handle up to 52-bit physical addresses, add NX bit functionality, and make it the mandatory memory paging model in long mode
source: Wikipedia
however, to use it, you need to patch windows 7, and here i will explain you how to do!
first, download PatchPae:
http://www.furulevi...._(PatchPae).htm
NOTE: you need WinRar!
after you did both download winrar and patchpae, create a new folder in the desktop named PatchPae, and extract everything from the download into the file on your desktop.
then, copy the file in your desktop to your local disk C:
if you did that, go to start and type in search: cmd. and open it with administrator rights. make sure it says C:/windows/System32
then copy and paste the following commands in your cmd and after each command press ENTER:
C:PatchPaePatchPae.exe -type kernel -o ntkrnlpx.exe ntkrnlpa.exe
This will patch the kernel to enable a maximum of 128GB of RAM.
C:PatchPaePatchPae.exe -type loader -o winloadp.exe winload.exe
This will patch the loader to disable signature verification.
bcdedit /copy {current} /d "Windows 7 (PAE Patched)"
This will create a new boot entry. A message should appear:
The entry was successfully copied to {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}.<-- use the nummer that appears here for the following commands
bcdedit /set {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} kernel ntkrnlpx.exe
This will set our boot entry to load our patched kernel.
bcdedit /set {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} path Windowssystem32winloadp.exe
This will set our loader to be our patched loader.
bcdedit /set {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} nointegritychecks 1
This will disable verification of the loader.
now close everything and restart the computer.
a boot menu will appear, select Windows 7 (PAE Patched)
and there you go!!!
FAQ:
Q: when i put in a command it shows the path is undefined
A: make sure it has its own file in your local disk (C:), and also make sure the file is EXACTLY named PatchPae. and run cmd (not command prompt!) and run it as administrator, then try again
Q: how i copy in command prompt_
A: right click and select mark, then mark your section like you mark anything, and right click to copy.
Q: why not isntalling 64-bit OS_
A: COMPITABILITY: most people like me have hardware that only supports 32-bit OS, for these people there is this patch
here is a video:
NOTE: it is totaly pointless if you have an 64-bit OS or less then 4GB of RAM
NOTE: i recommend to take a backup of your files, althrough if something goes wrong windows wont be damaged.
NOTE: some applications cant use the new RAM
i wish you luck and a happy patching! i hope i helped you!
if you have any problems feel free to contact me
how to undo these changes_ just simply boot in a no PAE patched boot
how to PERMANENTLY remove the patch:
1. reboot in the no PAE patched boot
2. go to start >run>MSCONFIG>boot
3. set the no PAE patched boot as default
4. delete the PAE patched boot
5. delete the PatchPae from your local hard drive
6. empty your recycle bin and you are done
VERRY CRITICAL IMPORTANT NOTE: DONT DELETE the OS you started with before you patched!!! critical system failure is the result then!
Edited by martijn1803, April 17 2013 - 04:31 AM.