Adding new Virtual Machine in VirtualBox

Open Application -> System Tools -> VirtualBox

Choose the’ New’ gear icon or ‘new’ from the machine tab. This will launch a “Create New Virtual Machine” wizard.

Enter the name of the Guest machine as you desire and choose the Operating system and Version that you are planning to install as follows, and click “Next”.

Enter the RAM size that you want to provide to your Guest machine as follows.

Now it will ask you to choose your “Virtual Hard Disk” for installing the guest OS as follows.

Since this is the first time we are installing, click “Create New Hard disk”.

Create a “New Virtual Disk” wizard will open. Click Next

Now we need to choose, whether the disk has to be “Dynamically expanding disk” or “Fixed-size storage”.

Remember, for a guest machine, it sees a file residing in the host machine as the “Hard Disk”. Whenever a guest machine does any write to disk, it will be written into the file which resides on the host machine

If we select “Fixed storage” and if we choose the size as 10GB then, in host machine ( by default under .VirtualBox/Guest-Machine/Guest-Machine.vdi ) a file will be created with 10GB of size

If we select “Dynamic storage” then,.VirtualBox/Guest-Machine/Guest-Machine.vdi will initially be a small size file, but it will grow whenever the guest machine writes data to the disk.

Choose “Dynamic storage” and click Next.

Enter the maximum size that you want to allocate for the guest machine.

Click Finish. Now a file named “Guest-Machine.vdi” will be created under “.VirtualBox/Guest-Machine/”

Click “Finish” to complete the creation of the Virtual Machine.