Longmode; required when virtual machine is configured for a 64-bit OS

Issue:

While attempting to install a 64bit OS in ESX Server you receive the following message

 

Host CPU is incompatible with the virtual machine’s requirements at CPUID level 0x80000001 register ‘edx’.

host bits: 0000:0000:0000:0000:0000:0000:0000:0000

required: xx1x:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx

Mismatch detected for these features:

*Longmode; required when virtual machine is configured for a 64-bit OS.

 

 

 

Cause:

The Virtualization Technology (VT) Extensions have not been enabled in the server BIOS.

 

Solution:

To install and configure 64bit operating systems in ESX Server requires that Virtualization Technology (VT) Extensions be enabled in the server BIOS settings.

 

HP DL580 G5 Example:

1)      Enter the BIOS of the server by pressing F10 when prompted

2)      Select Advanced Options…Processor Options

a.       Intel(R) Virtualization Technology

                                                               i.      Select Enabled

b.      ESC

3)      ESC

4)      ESC

5)      F10 to exit

6)      Power Off Server

a.       Required to enable Virtualization Technology

7)      Power On Server