Virtual Box requires Hyper-V to be disabled
In virtualbox if you only have options to create 32 bit VMs... Why is that!?
It's because virtual box requires that Hyper-V be disabled.
Now I'm checking: if i disable Hyper-V can I re-enable it later?
dism.exe /Online /Disable-Feature:Microsoft-Hyper-V dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All
You need to be running 64-bit powershell, elevated.
If you're not elevated, you'll get:
> dism.exe /Online /Disable-Feature:Microsoft-Hyper-V Error: 740 Elevated permissions are required to run DISM. Use an elevated command prompt to complete these tasks.
And if you're not running 64-bit powershell, you'll get:
> dism.exe /Online /Disable-Feature:Microsoft-Hyper-V Deployment Image Servicing and Management tool Version: 10.0.10586.0 Error: 11 You cannot service a running 64-bit operating system with a 32-bit version of DISM. Please use the version of DISM that corresponds to your computer's architecture. The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log
So run from an elevated 64-bit version of Powershell.
> dism.exe /Online /Disable-Feature:Microsoft-Hyper-V Deployment Image Servicing and Management tool Version: 10.0.10586.0 Image Version: 10.0.10586.0 Disabling feature(s) [==========================100.0%==========================] The operation completed successfully. Restart Windows to complete this operation. Do you want to restart the computer now? (Y/N)
Restart the computer.
Now when you open Virtual Box there's a bunch of 64 bit machines you can create.
(I downloaded this image: http://mirror.aarnet.edu.au/pub/xubuntu/releases/14.04/release/xubuntu-14.04.3-desktop-amd64.iso)