Click New to create a new virtual machine. Fill in the appropriate details:
- Name: If you include the word Ubuntu in your name the Type and Version will auto-update.
- Machine Folder: This is where your virtual machines will be stored so you can resume working on them whenever you like.
- ISO Image: Here you need to add a link to the ISO you downloaded from the Ubuntu website.
We want to install Ubuntu unattendedly so we can leave the checkbox to skip unchecked.
Create a user profile
To enable the automatic install we need to prepopulate our username and password here in addition to our machine name so that it can be configured automatically during first boot.
The default credentials are:
- Username: vboxuser
- Password: changeme
It is important to change these values since the defaults will create a user without sudo access.
Ensure your Hostname has no spaces to proceed!
It is also recommended to check the Guest Additions box to install the default Guest Additions ISO that is downloaded as part of VirtualBox. Guest additions enables a number of quality of life features such as changing resolution and dynamic screen resizing so it is highly recommended!
Note: If you choose not to use unattended install then this step will be skipped and you will go straight to the following screen. Once your machine has been created you will be able to create a username and password by proceeding through the standard Ubuntu Desktop installation flow on first boot.
Define the Virtual Machine’s resources
In the next section we can specifiy how much of our host machine’s memory and processors the virtual machine can use. For good performance it’s recommended to provide your VM with around 8GB of RAM (althought 4GB will still be usable) and 4 CPUs. Try to remain in the green areas of each slider to prevent issues with your machine running both the VM and the host OS.
Then we need to specify the size of the hard disc for the virtual machine. For Ubuntu we recommend around 25 GB as a minimum. By default the hard disk will scale dynamically as more memory is required up to the defined limit. If you want to pre-allocate the full amount, check the ‘Pre-allocate Full Size’ check box. This will improve performance but may take up unnecessary space.
Click Next to continue and view a summary of your machine setting.
After this click Finish to initialize the machine!