2003 Yukon Engine Light On

total of more than 4GB of RAM on Linux and Windows XP / Vista

ll your PC can not "see" more than 4GB of RAM both Linux and Windows XP / Vista even though you will have installed a larger quantity? Do not worry, a solution exists and is in ' enable system-level operational mode PAE (Physical Address Extension), which is a feature of x86 processors that allows you to overcome the barrier of 4GB of RAM . This is achieved by the processor using a 36bit addressing that, while remaining compatible with the structure 32-bit, allows the operating system to achieve use up to 64GB of RAM . Both

on Windows XP / Vista than on standard distributions of Linux the PAE is normally not entitled to it because it is not always properly supported by the motherboard or drivers installed on your operating system: the only thing to do is try to enable it after you have obviously taken the necessary precautions.

enable PAE mode on Windows XP

• Right click on " My Computer" and select "Properties "
• Open the tab " Advanced "and under" Startup and Recovery ", click on" Settings "and then" Edit "
• will open a notepad with the contents of the file" boot.ini " identified in the file section " [operating systems] " and then change the boot string by appending the flag " / PAE " in a manner similar to the following:
  multi (0) disk (0) rdisk (0) partition (1) \\ WINDOWS = "Microsoft Windows XP Professional" / noexecute = optin / PAE

Enable PAE mode in Windows Vista

• Press the Windows key + R, then type "cmd " and press Enter;
• Press Ctrl + Shift + Enter to execute the prompt in administrator mode;
• Type the command " BCDEdit / set PAE forceenable "then press Enter.

enable PAE mode on Linux Ubuntu

• Open a terminal and run the following sequence of commands to install a kernel "PAE aware" :
  sudo apt-get update sudo sudo apt-get install linux-headers-server linux-image-server linux-server
• Once the installation is complete, reboot the system with the new kernel: sudo reboot