Hardware Virtualization (alias VT-X - a command Set of the CPU) is required for virtual machines.

Enabling it is hidden within

Overclocking > CPU Features > Inter Virtualization Technology

ACHTUNG: “CPU Features” IS FUCKING ONLY AVAILABLE IN “STANDARD MODE” - NOT IN “ECO MODE”

“DeviceGuard” also blocks the VT-x feature, which causes the “VERR_VMX_NO_VMX” message by VirtualBox or Vagrant.

You can check, whether DeviceGuard is running under SystemInformation. Search for: “DeviceGuard Virtualization: Running”

You can disable it, via “gpedit.msc”, setting “Computer Configuration\Administrative Templates\System\Device Guard\Turn On Virtualization Based Security” to “Disabled”.

Additionally you can set “bcdedit /set hypervisorlaunchtype off”

• https://arstechnica.com/civis/viewtopic.php?f=8&t=1423473
• https://forums.virtualbox.org/viewtopic.php?f=38&t=86399

You can check, whether the device guard is running under

You can use the tool to disable the DeviceGuard.

Use the Device Guard and Credential Guard hardware readiness tool from Microsoft to disable the credential guard: https://www.microsoft.com/en-us/download/details.aspx?id=53337

Run Powershell as administrator and follow this steps:

To verify DG/CG is enabled:

DG_Readiness_Tool_v3.6 -Ready

To disable DG/CG:

DG_Readiness_Tool_v3.6 -Disable

and restart the PC.

If Powershell can't execute the script, first try to set the execution policies unrestricted with this just typing:

Set-ExecutionPolicy Unrestricted

Try again to execute the script and restart the PC.

How to customize Virtual box resolution is written here: http://www.virtualbox.org/manual/ch09.html

VBoxManage.exe setextradata "Windows8" CustomVideoMode1 1680x1050x32
VBoxManage.exe setextradata global GUI/MaxGuestResolution any

The dynamic disk occupies XGB of real disk space, once there tehre were XGB of Data.
But the virtualdisk does not automatically release diskpace.
To release diskspace do: - Disk defragmentation inside of the virtual machine - use sdelete.exe tool to delete unneeded blocks

sdelete.exe -z

- use vmbox toolkit to compact the disk

VBoxManage modifyhd "X:\Virtual Machines VirtualBox\VirtualboxHdd.vdi" --compact

http://www.toptensoftware.com/VBoxHeadlessTray/

Use the vboxvmservice tool to run Virtual Machines as a service!

The Network woks if set to Networkbridge