VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL).
As of version 4.0, VirtualBox introduces the Extension Pack mechanism which allows Oracle and 3rd parties to deliver additional functionality on top of the standard Open Source product.
The Oracle VM VirtualBox Extension Pack, adds support for USB 2.0, RDP server and the PXE bootloader with E1000 support.
You can download this Pack from the same location and install it via the VirtualBox Global Settings using the Extensions pane.
Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, and OpenBSD.
• Download VirtualBox 4.0.0 Beta 4
You can download VirtualBox 4.0.0 Beta 4 from website Download Oracle VM VirtualBox 4.0.0 Beta 4
Note: Please do NOT use this VirtualBox Beta release on production machines. A VirtualBox Beta release should be considered a bleeding-edge release meant for early evaluation and testing purposes.
What's new in Oracle VirtualBox 4.0.0 Beta 4
This is the second beta of the upcoming 4.0 release. The following items were added/fixed since VirtualBox 4.0.0 Beta 4:
- Audio: fixed memory corruption under certain circumstances
- 3D support: fixed OpenGL support for Windows 2000 guests
- Settings: modifying VM session could lose disk attachments (4.0 Beta 3 regression)
- OVA: fixed crash during import
- GUI: better OS type string matching
- GUI: fixed redraw problem on X11 guests with multiple monitors attached (Mac OS X hosts only)
- GUI: remember last directory in file dialogs
- Settings: fixed .vbox file format portability issue with snapshots (backslashes)
- ExtPacks: fixed installation on certain Linux hosts (e.g. openSUSE)
- ExtPacks: require sudo for installation on Linux and Solaris hosts
- Storage: fixed possible crash during suspend
- Storage: fixed raw disk access on OS X
- Storage: lower the CPU usage for low disk I/O bandwidth limits
- Storage: added multi-attachment image mode for shared disk clusters
- Storage: fixed SATA activity LED handling
- 2D: fixed seamless mode when 2D is on for Mac hosts
- Additions: fixed incompatibility with SLED 11
Source
• VirtualBox Beta Feedback
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