Dell server needs virtualization enabled to install 64 bit Server 2008 in ESXi
Problem: Using ESXi to setup Windows Server 2008 virtual machine, I was surprised to see a message after booting from the image of the install DVD:
Windows Boot Manager
Info: Attempting to load a 64-bit application, however this CPU is not compatible with 64-bit mode.
This is from a Dell 2950 III with one Xeon CPU (Quad Core Intel Xeon E5405, 2x6MB
Cache, 2.0GHz, 1333MHz FSB) This is from Dell’s virtualization server catalog with available VMware ESXi and ESX software as an option.
Solution: Turns out, you must go to the system BIOS under the CPU section, and change Virtualization Technology from Disabled to Enabled since the factory setting is Disabled.