Fedora1432bits installation PAE breaks through 4G memory limit

This article is followed by "ora14 install Nvidia graphics driver". After installing the Nvidia graphics driver, if your host is installed with 4 GB memory (or more than 3 GB memory) and uses a 32bits system, we need to consider installing PAE to break through the memory limit. The current memory is very cheap, and many people get 4 GB of memory on the machine. However, in actual use, the system may only display about GB of memory, and not all hosts can break through this memory limit. To break through this limitation, we mainly solve the hardware

This article is based on the article "install Nvidia graphics driver for ora 14". After installing the Nvidia graphics driver, if your host has 4 GB memory (or more than 3 GB memory) installed and uses a 32 bit system, we need to consider installing PAE to break through the memory limit.

The current memory is very cheap, and many people get 4 GB of memory on the machine. However, in actual use, the system may only display about GB of memory, and not all hosts can break through this memory limit. To break through this restriction, we mainly solve the hardware and software problems.

Hardware: memory, motherboard, and CPU

If it is just for entertainment or ordinary office PCs, only 2 GB (or 3 GB) of memory will be enough, and the speed of installation will not be significantly improved. If you want to install more than 4 GB memory, you must first determine the memory address of the hardware supporting 64bits. You can refer to the motherboard manual to determine the number of memory slots and the maximum memory size of a single slot. The manual may also specify whether 64bits memory addressing is supported. If not, go to the BIOS and find out if there is any option similar to "memory remap" in the memory and open it. In general, new computers should support 64bits addressing. If it is an old computer, you may need to upgrade the BIOS. After plugging in the memory, if the BIOS shows 4 GB memory, the motherboard will be okay.

Then, check whether the CPU supports 64bits. The new cpu basically supports 64bits. In linux, you can run the command "cat/proc/cpuinfo | grep pae" to determine whether the CPU is correct if pae exists in the output flags. (This may be intel's cpu identifier, amd's uncertainty)

Software:

The simplest method is to install the 64 bits system. Each dist. Has a 64bits version and can be directly installed. Www.linuxidc.com if 32bits is installed, for example, if my computer is 14-ora 14-32bits, you need to install a PAE. The process is also very simple. Just run "yum install kernel-PAE" and reboot. Remember to select kernel-$ (uname-r) when selecting kernel in linux) -PAE options. After entering the PAE-supported kernel, if the display is abnormal and the nvidia. ko is not found, install a kmod-nvidia-xxxxx-PAE through yum. Note that the xxxxx used here must be the same as the model specified by the nvidia driver above me. For example, if you have installed the kmod-nvidia-173xx driver, you need to install the kmod-nvidia-173xx-PAE here.

The operation is risky and the consequences are at your own risk. This article is for reference only and does not wake up when writing the text. Please forgive me for any errors.