this kernel requires an x86-64 cpu, but only detected an i686 CPU.
Trying to install kali Linux or Ubuntu on Oracle VirtualBox or VMware?
but when running the virtual machine you got this message ” This kernel requires an x86-64 CPU, but only detected an i686 CPU. Unable to boot – please use a kernel appropriate for your CPU “.
Case one There is many case you are receiving this message for but the most common one can be fixed from your bios settings on intel CPU you have to enable ” Intel Virtualization Technology ” and on AMD CPU you have to enable “AMD V” this will simply fix this error
how to enable Virtualization Technology:
- Power on your computer and open the BIOS by pressing the delete key or F1 key or F2 or Alt and F4 keys it depend on the system you have.
- Open the Processor submenu The processor settings menu may be in the Chipset, Advanced CPU Configuration or Northbridge.
- Enable Intel Virtualization Technology (also known as Intel VT) or AMD-V depending on the brand of the processor
Case tow on another case your host operating system is 32-bit while the system you are trying to run is 64-bit
to fix that try to run a 32bit system just like your host system is 32-bit
but if you still want to run a 64bit guest over a 32bit host, you can do that by enabling Virtualization option or Vtx/X option.
Case three but what if you tried all of that and still getting the same error ( This kernel requires an x86-64 CPU )
in this case, the problem may be in your virtual machine settings
Check your virtual machine configuration and make sure you chose the right CPU type,
if you are trying to install a 32bit guest system then chose 32bit and if you are trying to install 64-bit guest system chose 64-bit.
Note if you are trying to run a 32bit system over a 64bit CPU I should work fine, but the error comes when we try to install 64bit over 32bit
so in simple words :
To be able to run a 64-bit OS in Virtualbox we have to make sure the virtual machine’s architecture is set to 64-bit too.
what is Virtualization Technology anyway ?
Virtualization Technology (VT) enables a CPU to act as if you have several independent computers, to enable several operating systems to run at the same time on the same machine.
it’s available in two versions: VT-x, for 32bit processors, and VT-i, for 64bit processors
How to check if Virtualization Technology (vt-x/amd-v) is Enabled ?
For those who have a intel processor you can use this free utility proved by intel
intel processor identification utility link
For AMD users you can check it with this tools proved by AMD
AMD-V detection utility
or you can use Microsoft Hardware-Assisted Virtualization Detection Tool, this tool work on both intel and AMD processors Link
I hope this worked for you and if not , pleas leave a comment with this details
CPU type : 32bit or 64bit , intel or AMD
host OS : everything about it for example : windows 10 64bit
guest OS : example : Kali Linux 64bit
software you are using ? : Oracle VirtualBox or VMware and what versions