You can then launch the installer from the virtual disc drive in your virtual machine. In VirtualBox, boot your guest operating system and click Devices > Insert Guest Additions CD Image. These packages include special drivers that help your guest operating system run faster on your virtual machine’s hardware. Install Your Virtual Machine Software’s ToolsĪfter installing a guest operating system inside a virtual machine, the first thing you should do is install your virtual machine software’s drive package-Guest Additions for VirtualBox, VMware Tools for VMware, or Parallels Tools for Parallels. The space will be assigned in a large block instead of being added in smaller pieces.

You also won’t see as much file fragmentation. There’s a trade-off here: a fixed-size disk uses more space on your hard disk, but adding new files to the virtual machine’s hard disk is faster. When you create a fixed-size disk, all 30 GB of that space would be allocated immediately. However, it’s slower than creating a fixed-size disk (also known as a preallocated disk).

This can be convenient, as each virtual machine won’t take up an unnecessarily large amount of space on your hard drive.

Virtualbox ubuntu performance