Linux and Non PAE CPU

Computero

What is PAE

Physical Address Extension (PAE) is a feature found on almost all 32 bit processors produced after Pentium Pro, ie. younger than around 1995. Because PAE is close to being a standard it is now a requirement for some Linux Distros. During installation the processor is prompted for the PAE flag, and only if present the process will the install carry on. A number of older Pentium M processors produced around 2003-4 (the Banias family) do not display the PAE flag, and hence a normal installation fails. However, these processors are in fact able to run the latest (and PAE-demanding) kernels if only the installation process is modified a little. The problem is not missing PAE, it’s about the processor not displaying its full capabilities. Pentium M’s of the Dothan family display the PAE flag correctly and support the latest distros without modifications. The same distinction (Banias versus…

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