Download VirtualBox 4.0.0 Beta 3

VirtualBox  4.0.0 Beta 3

By Oracle  (Open Source)
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# The following major new features were added:

* Reorganization of VirtualBox into a base package and Extension Packs
* New settings/disk file layout for VM portability
* Major rework of the GUI (now called "VirtualBox Manager"):
- Redesigned user interface with guest window preview (also for screenshots)
- New "scale" display mode with scaled guest display
- Support for creating and starting .vbox desktop shortcuts (bug #1889)
- The VM list is now sortable
- Machines can now be deleted easily without a trace including snapshots and saved states, and optionally including attached disk images (bug #5511; also, VBoxManage unregistervm --delete can do the same now)
- Built-in creation of desktop file shortcuts to start VMs on double click (bug #2322)
* Open Virtualization Format Archive (OVA) support
* VMM: support more than 1.5/2 GB guest RAM on 32-bit hosts
* New virtual hardware:
- Intel ICH9 chipset with three PCI buses, PCI Express and Message Signaled Interrupts (MSI)
- Intel HD Audio, for better support of modern guest operating systems (e.g. 64-bit Windows; bug #2785)
* Resource control: added support for limiting a VM's CPU time and IO bandwidth
* Storage: support asynchronous I/O for iSCSI, VMDK, VHD and Parallels images
* Storage: support for resizing VDI and VHD images
* Guest Additions: support for copying files into the guest file system; the Windows Additions can now automatically update themselves (requires installed Windows Guest Additions 4.0 or later)
* Language bindings: uniform Java bindings for both local (COM/XPCOM) and remote (SOAP) invocation APIs
* Guest Additions: support for multiple virtual screens in Linux and Solaris guests using X.Org server 1.3 and later

# In addition, the following items were fixed and/or added:

* VMM: Enable large page support by default on 64-bit hosts (applies to nested paging only)
* VMM: fixed guru meditation when running Minix (VT-x only; bug #6557)
* GUI: add configuration dialog for port forwarding in NAT mode (bug #1657)
* GUI: show the guest window content on save and restore
* GUI: certain GUI warnings don't stop the VM output anymore
* GUI: fixed black fullscreen minitoolbar on KDE4 hosts (Linux hosts only; bug #5449)
* Bridged networking: improved throughput by filtering out outgoing packets intended for the host before they reach the physical network (Linux hosts only; bug #7792)
* 3D support: allow use of CR_SYSTEM_GL_PATH again (bug #6864)
* 3D support: fixed various clipping/visibility issues (bugs #5659, #5794, #5848, #6018, #6187, #6570)
* 3D support: guest application stack corruption when using glGetVertexAttrib[ifd]v (bug #7395)
* 3D support: fixed OpenGL support for libMesa 7.9
* 2D Video acceleration: multimonitor support
* VRDP: fixed rare crash in multimonitor configuration
* VRDP: support for upstream audio
* Display: fixed occasional guest resize crash
* NAT: port forwarding rules can be applied at runtime
* SATA: allow to attach CD/DVD-ROM drives including passthrough (bug #7058)
* Floppy: support readonly image files, taking this as the criteria for making the medium readonly (bug #5651)
* Audio: the DirectSound backend now allows VMs to be audible when another DirectSound application is active, including another VM (bug #5578)
* EFI: support for SATA disks and CDROMs
* BIOS: reduce the stack usage of the VESA BIOS function #4F01 (Quake fix)
* OVF/OVA: significant performance improvements during export and import
* OVF/OVA: creation of the manifest file on export is optional now
* OVF/OVA: allow overwriting the target disk format on import
* OVF/OVA: fixed export of VMs with iSCSI disks
* Storage: Apple DMG image support for the virtual CD/DVD (bug #6760)
* Linux host USB support: introduced a less invasive way of accessing raw USB devices (bugs #1093, #5345, #7759)
* Guest Additions: Shared Folders now can be marked as being auto-mounted on Windows, Linux and Solaris guests
* Linux Additions: Shared Folders now support symbolic links (bug #818)
* Linux Additions: combined 32-bit and 64-bit additions into one file
* Windows Additions: automatic logon on Windows Vista/Windows 7 is now able to handle renamed user accounts; added various bugfixes

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