How to use more than 4GB of ram on an x32 bit install of Debian
Like Windows, all x32 packages of Debian can only use a maximum of 4GB of ram. Some users may find it’s inconvenient to update the os on their VPS server or dedicated servers due to possible downtime worries. You can actually increase the maximum allowed ram in your server up to 64gb by issuing a single command.
Most dedicated servers come with a minimum of 16 GB of ram so if you have deployed an x32 os install to your server instead of an x64 bit then you will need to use the command below. Login as root and issue;
apt-get install linux-image-2.6-686-bigmem
Then reboot your server and the total ram up to 64gb will be available to use.
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