How to enable 32-bit Linux Hosts to support larger memory than 4 GB

How to enable the 32bitLinux host to support a large memory of more than 4 GB-Linux Enterprise Application-Linux server application information is described below. The times are different, and the memory is getting bigger and bigger. 4 GB memory is nothing for the server, but the maximum memory addressing space supported by the 32-bit system is 2 ^ 32 = 4 GB. Therefore, to support parts larger than 4 GB, you need to find another method. The simplest method is to use a 64-bit system. This is very simple and will not be discussed here.

First, large memery support must be enabled in the BIOS. Different BIOS is different. In short, you must set the Tab so that all the memory can be viewed during startup.

To use the PAE kernel in Linux, the installation method is as follows:

Yum install kernel-PAE

After the automatic installation is complete, modify the startup settings:

Vi/boot/grub. conf

Here:

Default = 1
Timeout = 1
Splashimage = (hd0, 0)/grub/splash.xpm.gz
Hiddenmenu
Title Fedora Core (2.6.22.9-61. fc6)
Root (hd0, 0)
Kernel/vmlinuz-2.6.22.9-61.fc6 ro root = LABEL =/1 rhgb quiet
Initrd/initrd-2.6.22.9-61.fc6.img
Title Fedora Core (2.6.22.9-61. fc6PAE)
Root (hd0, 0)
Kernel/vmlinuz-2.6.22.9-61.fc6PAE ro root = LABEL =/1 rhgb quiet
Initrd/initrd-2.6.22.9-61.fc6PAE.img
Title Fedora Core (2.6.20-1.2952.fc6)
Root (hd0, 0)
Kernel/vmlinuz-2.6.20-1.2952.fc6 ro root = LABEL =/1 rhgb quiet
Initrd/initrd-2.6.20-1.2952.fc6.img

The title count starts from scratch and you can see the bold PAE. The serial number here is 1, so set default to 1. In addition, you can change the timeout value to 1 for the server. This allows the system to wait a few seconds when it is restarted.