Home/ Questions/Q 8771511
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-13T17:48:25+00:00

I am trying to install CentOS 5.6 in My VirtualBox but i got this

  • 0

I am trying to install CentOS 5.6 in My VirtualBox but i got this error on boot screen.

Your CPU Does not support long mode : use a 32 bit Distribution

My CPU is 64 bit i checked that using `uname -a’ command and the output is

Linux localhost.localdomain 2.6.43.8-1.fc15.x86_64 #1 SMP Mon Jun 4 20:33:44 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

As per my knowledge i need to enable 32 bit support to my VirtualBox but i don’t from where i can enable that.

If you have any idea regarding this then please suggest me.

Thanks & Regards

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Recently both VMware (in VMplayer 5 and VMware workstation 9) and Oracle Virtual Box require that you have VT extensions enabled in your computer BIOS for 64-bit support to work.

    From Wikipedia: VirtualBox supports some guests (including 64-bit guests, SMP guests and certain proprietary OSs) only on hosts with hardware-assisted virtualization.

    In other words, make sure you have VT extensions enabled in your BIOS, and it should work.

    EDIT: If you are not sure if your system even supports hardware assisted virtualization, this is how to check:

    1. Windows: install and run HAV detection tool

    2. Linux: cat /proc/cpuinfo and check for vmx (Intel VT) or svm (AMD SVM)
      flags. If you don’t see them, your hardware is too old.

    • 0