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When i start the Ubuntu in Oracle VM Virtual box, it throws following error.

This kernel requires an x86-64 CPU,but only detected an i686 CPU. Unable to boot- Please use a kernel, appropriate to your CPU.

Kindly lend your help to overcome this issue.

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The error message is self-explanatory. You have configured the CPU of the virtualbox guest as 32 bit while you are trying to install a 64-bit Ubuntu.

To solve this issue either install the 32-bit version of Ubuntu or configure the virtualbox to set the CPU of the guest as 64 bit.

Note that Ubuntu server editions do not come with a 32 bit version now-a-days so if you are trying to install the server edition you should better configure the virtualbox accordingly.

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  • thanks for the response.. Should i have to download new version or can i update it by any means ? – DevME Oct 21 '15 at 3:33
  • @Reshma If you are going to install desktop version then download the 32 bit version from here or you need to configure the virtualbox guest machine to have a 64 bit CPU. – heemayl Oct 21 '15 at 3:37
  • please , could you recommend any link to get the VM virtual box for 64 bit cpu – DevME Oct 21 '15 at 3:39
  • @Reshma Is your host machine 32 bit or 64 bit? – heemayl Oct 21 '15 at 3:41
  • its 64 bit machine – DevME Oct 21 '15 at 3:44

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