While installing Ubuntu in VirtualBox, I got error messages:

This kernel requires X86-64 CPU,but only detected an i686 CPU. Unable to boot- please use a kernel appropriate for your CPU.

How do I download the appropriate kernel?

  • Download and use the 32-bit version because that's the only one your hardware supports.
    – user692175
    Aug 4 '17 at 12:41

I am also quite new, but I think you need to download the 32-bit version (i386). You will find it here http://releases.ubuntu.com/16.04/

Hope this helps!

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