. Written in, and 61–118 depending on platform Base Package ( support only for ): version 2 (Optionally for most files of the source distribution), 'Extension Pack' (including support): Website Oracle VM VirtualBox (formerly Sun VirtualBox, Sun xVM VirtualBox and Innotek VirtualBox) is a free and open-source for computers currently being developed.
Hi, I'm wondering a bit about this one. Is the official statement from the developers 'We will never ever produce guest additions for Windows 98' or 'We will produce guest additions for Windows 98 once we get more pressing bugs fixed'?
Developed initially by Innotek, it was acquired by in 2008 which was in turn acquired by Oracle in 2010. VirtualBox may be installed on a number of host operating systems, including:, and. There are also ports to and. It supports the creation and management of guest running versions and derivations of, Solaris, and others, and limited virtualization of macOS guests on Apple hardware. For some guest operating systems, a 'Guest Additions' package of device drivers and system applications is available which typically improves performance, especially of graphics. Logo of VirtualBox OSE, 2007–2010 VirtualBox was initially offered by Innotek GmbH from, under a license, making one version of the product available at no cost for personal or evaluation use, subject to the VirtualBox Personal Use and Evaluation License (PUEL). In January 2007, based on counsel by, Innotek GmbH released VirtualBox Open Source Edition (OSE) as, subject to the requirements of the (GPL), version 2.
Innotek GmbH also contributed to the development of and support in virtualization and OS/2 ports of products from which were later acquired. Specifically, Innotek developed the 'additions' code in both and, which enables various host-guest OS interactions like shared or dynamic viewport resizing. Acquired Innotek in February 2008. Sun in January 2010 and re-branded the product as 'Oracle VM VirtualBox'. Licensing The core package is, since version 4 in December 2010, under (GPLv2). The separate 'VirtualBox Oracle VM VirtualBox extension pack' providing support for 2.0 and 3.0 devices, (RDP), disk encryption, and (PXE) boot is under a license, called Personal Use and Evaluation License (PUEL), which permits use of the software for personal use, educational use, or evaluation, free of charge.
Oracle defines personal use as the installation of the software on a single host computer for non-commercial purposes. Prior to version 4, there were two different packages of the VirtualBox software.
The full package was offered free under the PUEL, with licenses for other commercial deployment purchasable from Oracle. A second package called the VirtualBox Open Source Edition (OSE) was released under GPLv2. This removed the same proprietary components not available under GPLv2. Building the for VirtualBox since version 4.2 requires the use of the compiler, for which the is approved as 'Open Source' by the but not as 'free' by the or under the. Although VirtualBox has experimental support for Mac OS X guests, the of Mac OS X does not permit the operating system to run on non-Apple hardware, and this is enforced within the operating system by calls to the Apple (SMC) in all Apple machines, which verifies the authenticity of the hardware. Emulated environment. Running under VirtualBox on Users of VirtualBox can load multiple guest OSs under a single host operating-system (host OS).
Each guest can be started, paused and stopped independently within its own (VM). The user can independently configure each VM and run it under a choice of or if the underlying host hardware supports this. The host OS and guest OSs and applications can communicate with each other through a number of mechanisms including a common clipboard and a virtualized network facility. Guest VMs can also directly communicate with each other if configured to do so. Software-based virtualization In the absence of hardware-assisted virtualization, VirtualBox adopts a standard approach. This mode supports 32-bit guest OSs which run in rings 0 and 3 of the Intel architecture.
The system reconfigures the guest OS code, which would normally run in ring 0, to execute in ring 1 on the host hardware. Because this code contains many privileged instructions which cannot run natively in ring 1, VirtualBox employs a Code Scanning and Analysis Manager (CSAM) to scan the ring 0 code recursively before its first execution to identify problematic instructions and then calls the Patch Manager (PATM) to perform in-situ patching. This replaces the instruction with a jump to a VM-safe equivalent compiled code fragment in hypervisor memory. The guest user-mode code, running in ring 3, generally runs directly on the host hardware in ring 3. In both cases, VirtualBox uses CSAM and PATM to inspect and patch the offending instructions whenever a fault occurs.
VirtualBox also contains a, based on to recompile any or code entirely (e.g. BIOS code, a DOS guest, or any operating system startup). Using these techniques, VirtualBox can achieve a performance comparable to that of. Hardware-assisted virtualization VirtualBox supports both 's and 's hardware-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.
VirtualBox supports some guests (including 64-bit guests, SMP guests and certain proprietary OSs) only on hosts with. Device virtualization The system emulates hard disks in one of three disk image formats:. VDI: This format is the VirtualBox-specific VirtualBox Disk Image and stores data in files bearing a '.vdi'.: This is used by products such as and. It stores data in one or more files bearing '.vmdk' filename extensions. A single virtual hard disk may span several files.: This format is used by, and is the native virtual disk format of the operating system, starting with and. Data in this format are stored in a single file bearing the '.vhd' filename extension. A VirtualBox virtual machine can, therefore, use disks previously created in VMware or Microsoft Virtual PC, as well as its own native format.
VirtualBox can also connect to targets and to raw partitions on the host, using either as virtual hard disks. VirtualBox emulates (PIIX4 and ICH6 controllers), (ICH8M controller) and controllers to which hard drives can be attached.
VirtualBox has supported (OVF) since version 2.2.0 (April 2009). Both and host-connected physical devices can be mounted as CD/DVD drives. For example, the DVD image of a Linux distribution can be downloaded and used directly by VirtualBox.
By default VirtualBox provides graphics support through a custom virtual graphics-card that is compatible. The Guest Additions for Windows, Linux, Solaris, OpenSolaris, or OS/2 guests include a special video-driver that increases video performance and includes additional features, such as automatically adjusting the guest resolution when resizing the VM window or desktop composition via virtualized drivers.
For an network adapter, VirtualBox virtualizes these:. AMD PCnet PCI II (Am79C970A).
AMD PCnet-Fast III (Am79C973). Intel Pro/1000 MT Desktop (82540EM). Intel Pro/1000 MT Server (82545EM). Intel Pro/1000 T Server (82543GC). Paravirtualized network adapter (virtio-net) The emulated network cards allow most guest OSs to run without the need to find and install drivers for networking hardware as they are shipped as part of the guest OS. A special paravirtualized network adapter is also available, which improves network performance by eliminating the need to match a specific hardware interface, but requires special driver support in the guest.
(Many distributions of ship with this driver included.) By default, VirtualBox uses through which Internet software for end-users such as or can operate. Via a host network adapter or virtual networks between guests can also be configured.
Up to 36 network adapters can be attached simultaneously, but only four are configurable through the graphical interface. For a sound card, VirtualBox virtualizes Intel HD Audio, Intel ICH AC'97 and devices. A USB 1.1 controller is emulated so that any USB devices attached to the host can be seen in the guest. The proprietary extension pack adds a USB 2.0 or USB 3.0 controllers and, if VirtualBox acts as an RDP server, it can also use USB devices on the remote RDP client as if they were connected to the host, although only if the client supports this VirtualBox-specific extension (Oracle provides clients for Solaris, Linux and thin clients that can do this, and have promised support for other platforms in future versions). End user forums for VirtualBox.
Oracle Corporation. Retrieved 30 September 2017. Retrieved 2009-07-04.
February 28, 2014. Retrieved March 19, 2014. Retrieved 2009-07-04. Purdy, Kevin (May 4, 2010).
(Press release). Oracle Corporation. Retrieved 2014-10-15. Generally available today, Oracle VM VirtualBox 4.3 delivers the latest enhancements to the world’s most popular, free and open source, cross-platform virtualization software.
Retrieved 2009-07-04. Retrieved 2009-07-04. Ong, Ronny.:. Retrieved 2009-07-04. Retrieved 2009-07-04. (Press release).
Sun Microsystems. February 12, 2008. Retrieved 2008-02-12. Retrieved 2009-07-04.
Sun Microsystems, Inc. Retrieved 2008-02-26. On February 20 Sun completed the acquisition of Innotek. Retrieved 2010-01-30.
February 25, 2010. Retrieved March 6, 2010. Hawley, Adam (February 26, 2010). Oracle Virtualization Blog. Oracle Corporation. Archived from on 2010-04-07. Retrieved March 6, 2011.
Retrieved 2011-04-20. Retrieved 2017-11-28.
Retrieved 2009-07-04. Retrieved 2016-07-24. Non-reusable licenses. Retrieved 2016-07-24. Nonfree Software Licenses. Retrieved 2016-07-24.
Retrieved 2013-07-31. Retrieved 2011-04-25. Diedrich, Oliver (2007-01-15). Retrieved 2009-07-04. Perlow, Jason (2010-05-21).
Archived from on 2010-05-24. Retrieved 2010-05-24.
Archived from on 2010-02-05. Retrieved 2010-02-18. Retrieved 2011-01-17. Retrieved 2011-01-17. Retrieved 2011-01-17. Retrieved 2011-11-19.
Sun Microsystems. Zambo free games download. Archived from on 2008-09-10. Retrieved 2008-09-06. Retrieved 2016-04-14. Retrieved 10 October 2014.
Retrieved 10 October 2014. Retrieved 2017-03-28. Retrieved 2017-03-28. Retrieved 2017-03-28. Retrieved 2017-03-28.
Retrieved 2017-03-28. Retrieved 2017-03-28. Retrieved 2017-03-28.
Retrieved 2017-03-28. Retrieved 2018-01-29. External links Wikimedia Commons has media related to. Wikimedia Commons has media related to. (includes documentation in HTML and PDF formats). ( is not affiliated with Oracle).