When you select Fixed Size, the disk space you have specified will be allocated from your host disk while the virtual machine is being prepared. This setting was called Fixed Size in VirtualBox 6.x versions. You can also use the Pre-allocate Full Size feature to preset the capacity of the virtual disk from the disk capacity of your host computer. However, check to Create a virtual hard disk now because you will be installing an Ubuntu from scratch.

If there is a guest operating system that you have previously installed in the Hard Disk window, you can add the VDI virtual disk file. A minimum RAM size of 4GB may be sufficient, but if you have 16GB or 32GB memory sizes on your host, you can specify a higher size. But if you want to do a normal installation, you can check the Skip Unattended Installation option and continue.Īssign RAM size to your Ubuntu virtual machine depending on the hardware performance of your host computer. Using the unattended setup feature, you can pre-add the system’s product key and pre-set your user account name and password. In the new version 7.0 of VirtualBox, you can now create more simply and quickly, or make more professional configurations such as product key and user account for systems such as Windows.

In the window that opens, select the Ubuntu ISO file you downloaded and add it to the guest machine.

In the Create Virtual Machine window, type the name of the operating system you will install on the virtual machine in the Name field, expand the drop-down menu from the ISO Image section and click Other.

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