Use this page to configure hardware settings for the virtual machine.
The following fields are available on this wizard page:
Base Memory. Select the amount of RAM that Oracle VM VirtualBox should allocate every time the virtual machine is started. The amount of memory selected here will be taken away from your host machine and presented to the guest OS, which will report this size as the virtual machines installed RAM.
Choose this setting carefully. The memory you give to the VM will not be available to your host OS while the VM is running, so do not specify more than you can spare.
For example, if your host machine has 4 GB of RAM and you enter 2048 MB as the amount of RAM for a particular virtual machine, you will only have 2 GB left for all the other software on your host while the VM is running. If you run two VMs at the same time, even more memory will be allocated for the second VM, which may not even be able to start if that memory is not available.
On the other hand, you should specify as much as your guest OS and your applications will require to run properly. A guest OS may require at least 1 or 2 GB of memory to install and boot up. For best performance, more memory than that may be required.
Always ensure that the host OS has enough RAM remaining. If insufficient RAM remains, the system might excessively swap memory to the hard disk, which effectively brings the host system to a standstill.
As with other Create Virtual Machine wizard settings, you can change this setting later, after you have created the VM.
Processor(s). Select the number of virtual processors to assign to the VM.
It is not advised to assign more than half of the total processor threads from the host machine.
Enable EFI. Enables Extensible Firware Interface (EFI) booting for the guest OS.
Click Next to go to the next wizard page.