How much memory can centos 32-bit recognize?

centos 32-bit system can support recognition of up to 4G of memory. Methods to improve memory recognition: 1. Install "kernel-PAE"; 2. Use "vi /boot/grub/grub.conf" to change the default content from 1 to 0; 3. Use reboot to identify larger memory Memory.

The operating environment of this article: centos 7 system, Dell G3 computer.

How much memory can 32-bit centos recognize?

The maximum memory supported by 32-bit Linux is 4GB, and the maximum supported memory by 64-bit Linux is at the TB level.

The 32-bit operating system can only recognize 4G memory, and the same is true for centos. The server is 8G. Is there still 4G left?

The solution is introduced below:

1. Just install a kernel-PAE patch. Here are a few steps:

yum install kernel-PAE

2. Open

vi /boot/grub/grub.conf

If you see the following code, it means that the PAE kernel has been installed

title CentOS (2.6.18-8.1.4.el5PAE)root (hd0,0)kernel /vmlinuz-2.6.18-8.1.4.el5PAE ro root=LABEL=/initrd /initrd-2.6.18-8.1.4.el5PAE.img

Modify the setting to default startup (new ones are generally default startup, basically no need to modify)

default=0

3.reboot

After the server restarts, the system has successfully identified 8G memory.

If it still cannot be recognized, it is not a system problem, but a motherboard bios support problem.

Recommended tutorial: "centos tutorial"

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