If you get VERR_NEM_VM_CREATE_FAILED when starting a virtual machine in Oracle VirtualBox, reboot the host system and if that doesn't work, check out these solutions.

Your real PC running VirtualBox is called the host; VirtualBox is technically the hypervisor; and any virtualized systems it runs on the host PC are called guests, and are your virtual machines (VM).

Jack Wallen walks you through the process of creating simple bash scripts to automate backing up your VirtualBox VMs.

You may get VirtualBox failed to open/create the internal network when you start a VM on Windows. The suggestions in this post are sure to help you.

Create a new VM Click VirtualBox’s Add toolbar button, give the VM a name, and set Type to Linux, and Version to Other Linux, with the appropriate bit (32 or 64) parameter matching your distro.

Jack Wallen shows you a nifty trick for easily starting, stopping, pausing, and resuming your VirtualBox virtual machines on a headless Linux server.

This free virtual machine host is much improved and faster than VMware under Windows 7.