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VirtualBox supports both Intel's VT-x and AMD's AMD-V hardware-assisted virtualization. Making use of these facilities, VirtualBox can run each guest VM in its own separate address-space; the guest OS ring 0 code runs on the host at ring 0 in VMX non-root mode rather than in ring 1. [citation needed]
Virtual PC – full virtualization software allows running other operating systems, such as Windows and Linux, on PowerPC Macs (discontinued in 2007) VirtualBox; vMac – emulates a Macintosh Plus and can run Apple Macintosh System versions 1.1 to 7.5.5.
Support for Nehalem Mac Pro. Experimental support for Mac OS X 10.6 as guest. Support for Ubuntu 9.04 as guest. Various bug fixes. [23] 2.0.6 October 1, 2009 Fixed issues when running on Snow Leopard. Fixed issues with NVidia graphics cards on Mac OS X 10.6. Various bug fixes. [24] 2.0.7 April 8, 2010
Macs with Intel processors can run Linux through virtualization or through dual-booting. Common virtualization tools for Intel Macs include VMware Fusion, Parallels Desktop, and VirtualBox. [8] In 2010, Whitson Gordon from Lifehacker noted that Apple has streamlined the process of dual booting Windows on Macs, but not for Linux.
x86, x86-64 (with Intel VT-x or AMD-V, and VirtualBox 2 or later) Windows, Linux, macOS, Solaris, FreeBSD, eComStation DOS, Linux, macOS, [ 8 ] FreeBSD, Haiku , OS/2, Solaris, Syllable, Windows, and OpenBSD (with Intel VT-x or AMD-V, due to otherwise tolerated incompatibilities in the emulated memory management).
The desire to run multiple operating systems was the initial motive for virtual machines, so as to allow time-sharing among several single-tasking operating systems. In some respects, a system virtual machine can be considered a generalization of the concept of virtual memory that historically preceded it.
These hypervisors run on a conventional operating system (OS) just as other computer programs do. A virtual machine monitor runs as a process on the host, such as VirtualBox. Type-2 hypervisors abstract guest operating systems from the host operating system, effectively creating an isolated system that can be interacted with by the host.
Remote Install Mac OS X was a remote installer for use with MacBook Air laptops over the network. It could run on a Mac or a Windows PC with an optical drive. A client MacBook Air (lacking an optical drive) could then wirelessly connect to the other Mac or PC to perform system software installs.