
To get started, select Devices > Insert Guest Additions CD image. VirtualBox mounts a virtual CD image when the option is selected. The description may sound as if you'd need to insert a CD image, but this is not the case. The fix requires the installation of Guest Additions this may sound intimidating at first, but it is a straightforward process that completes in a matter of minutes on most systems.

Fixing the Screen Size of Windows in VirtualBox The following instructions explain in detail how that is done. Thankfully, it is rather easy to unlock all supported screen resolutions in VirtualBox. The scaling options are unlocked and available, though. The "resize to" options are all inactive, as they are grayed out and not selectable. The View > Virtual Screen menu of the VirtualBox application lists all available resolutions and scaling options. The low resolution may be sufficient for some tasks, but many may benefit from larger resolutions.
