Jonathan Lalou's blog

Case

On booting ChromeOS Vanilla within Virtual Box, I got the following error:

This kernel requires the following features not present on the CPU: pae
Unable to boot - please use a kernel appropriate for your CPU.

(Actually, the problem occured with ChromeOS but may have appened with another system)

Quick Fix

In Virtual Box, select the VM > Settings > Processor > check “Enable PAE/NX”.