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When I try to install ubuntu on Vbox, it shows an error that says to use x86-64 kernel but i already have one.

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marked as duplicate by blade19899, Takkat, karel, Javier Rivera, Seth Feb 20 '14 at 2:47

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The first thing that comes to my mind is that maybe you didn't chose the right one - if you got the 32bit iso, make sure to chose the 32 bit ubuntu when creating the vbox. –  McVader Feb 18 '14 at 17:34
The important info here is that the arch (32 or 64 bit) on the "real" machine and on the virtual one could be different. –  Rmano Feb 18 '14 at 18:31
Can you post the output of uname -a to your question? –  i08in Feb 19 '14 at 6:01

1 Answer 1

In order to run a 64bit virtual machine you must have an X86-64 host cpu, and choose a 64bit machine profile when creating the virtual machine.

Find out if you have a 64bit cpu:


Choose a 64bit profile in virtualbox:

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