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rated 0 times [  10] [ 0]  / answers: 1 / hits: 1868  / 2 Years ago, mon, april 11, 2022, 11:16:58

I'm using a laptop with 32-bit Ubuntu 10.04.



I used to have only 2 GB of RAM. Today, our IT-support upgraded my laptop to a total of 6 GB of RAM. They told me "Though you do now have 6 GB, when you use your current Ubuntu, you'll only have 3 GB available. You have to install the latest version of 64-bit Ubuntu to enable all of the 6 GB."



He was in a hurry to leave without explaining more. I turned on my laptop, used gnome-system-monitor to check, and as he said, it shows I only have 3 GB of RAM.



Could someone explain me why? Why do I have just 3 GB available, and why installing a 64-bit version makes all of the 6 GB available?


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If you have the 32bit version installed then you either need to install the 64bit version or you can just install a PAE kernel that can access all your ram. From terminal or ALT+F2 run sudo apt-get install linux-image-generic-pae linux-headers-generic-pae and reboot



You need a pae/64bit kernel to use more than 3.2gb as 32bit can not address more than that. It's a hardware limitation, not a linux one.


[#40881] Wednesday, April 13, 2022, 2 Years  [reply] [flag answer]
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