64-bit Guests

Be sure to enable I/O APIC for virtual machines that you intend to use in 64-bit mode. This is especially true for 64-bit Windows VMs. See . For 64-bit Windows guests, ensure that the VM uses the Intel networking device because there is no 64-bit driver support for the AMD PCNet card. See .

If you use the Create VM wizard of VirtualBox Manager, Oracle VM VirtualBox automatically uses the correct settings for each selected 64-bit OS type. See .