Convert Windows Server 8 from Full to Core or Core to Full without reinstallation

In the previous version of Windows Server system, if you want to covert a system from Full to Core or Core to Full, you have to perform a reinstallation.

Now, it's changed, you can transfer Windows Server 8 from Full to Core or Core to Full without reinstallation.
Note: This has been tested with Windows Server 8 Beta version.

You can use the following method to get it.

Full to Core

With PowerShell:
1. Import-Module Dism
2. Disable-WindowsOptionalFeature –online –Featurename ServerCore-FullServer

OR

With DISM:
Dism /online /disable-feature /featurename:ServerCore-FullServer

Core to Full

With PowerShell:
1. Import-Module Dism
2. Enable-WindowsOptionalFeature –online -Featurename ServerCore-FullServer,Server-Gui-Shell,Server-Gui-Mgmt

OR

With DISM
Dism /online /enable-feature /featurename:ServerCore-FullServer /featurename:Server-Gui-Shell /featurename:Server-Gui-Mgmt