When you install an operating system in a virtual machine or in other cases, it may be interesting to make a copy of a virtual machine.
For this, VirtualBox offers 2 types of cloning : full and linked.
To begin, we will create a complete copy of a virtual machine.
To do this, select your virtual machine and right click "Clone" on it.
Specify a name for the new virtual machine and check the box if you want to reset the MAC address of the different network adapters used by this virtual machine.
Note : the MAC address is a physical address that is supposed to be unique for each network card. It's therefore strongly recommended to check this box if you want to use these 2 virtual machines (the original one + its copy) simultaneously.
For the type of clone, you will have the possibility to create :
In this case, we select : Full clone.
When you want to clone a machine, you can choose between :
In our case, we will simply copy the current state of our virtual machine.
Since this is a full clone, VirtualBox will also create a copy of the virtual hard disks used by your virtual machine.
This can take a lot of time depending on the size of these and the performance of your physical computer.
Now we have 2 virtual machines running Windows 7.
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