subject: Use More Than 4 Gb Of Ram On Linux, Windows Vista And Xp [print this page]
On your PC you have installed more than 4GB of RAM but "see" only 4GB?
Do not worry, it's a common problem with x86 processors and can be solved simply by enabling, at the level of the operating system, the PAE (Physical Address Extension), so as to overcome problems without the 4 GB of RAM.
To enable PAE mode, follow these simple instructions.
If you have Windows XP:
* click the right mouse button on My Computer and choose Properties;
* you'll open a page of notebook. It 's the boot.ini file. Find the point where it says "[operating systems]" and change the string like this: multi (0) disk (0) rdisk (0) partition (1) WINDOWS = "Microsoft Windows XP Professional" / noexecute = optin / PAE
If you have Windows Vista:
* press the key combination Windows + R, in the popup that appears type "cmd" and press enter;
* simultaneously press Ctrl + Shift + Enter to execute the prompt as administrator;
* type the command "bcdedit / set PAE forceenable" and press enter.
But if savete Linux Ubuntu, do the following:
* open the terminal and type these commands to install a kernel PAE aware ":sudo apt-get update sudo apt-get install linux-headers-server linux-image-server linux-server
* When the installation is complete, reboot typing: sudo reboot.
Running the commands above will begin to use the processor with a 36-bit addressing, up from 32 the previous bit. This allows you to use more addressing of large schools of up to 64 GB RAM.
