VirtualBox 4.2 Release Candidate 2 is available for testing

Release Candidate 2 of VirtualBox 4.2 is now available for testing. This release is made available for testers and early adopters, and should not be used on production or critical systems.

Version 4.2 will be a major update and contains the following new features.

  • Improved Windows 8 support, in particular many 3D-related fixes
  • Ability to group virtual machines
  • Expert mode for wizards
  • Allow more settings to be modified while a guest is running
  • Support for up to 36 network cards
  • Limiting network IO bandwidth
  • Ability to start VMs during system boot on Linux, OS X and Solaris
  • New experimental support for Drag'n'drop from the host to Linux guests. Support for more guests and for guest-to-host is planned. (bug #81)
  • Host parallel port pass through on Windows platform
  • New API functions for controlling guests (see the SDK documentation)

    In addition to the new functionality, the following bugs have been fixed since the last beta release.

  • Mac OS X hosts: sign application and installer to avoid warnings on Mountain Lion
  • VMM: improved VM context switch performance for Intel CPUs using nested paging
  • VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)
  • VMM: fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9; bug #9941)
  • VMM: fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests (e.g. old OS/2 releases)
  • VMM: support recent VIA CPUs (bug #10005)
  • GUI: network operations manager
  • GUI: allow taking screenshots of the current VM window content
  • GUI: allow automatically sorting of the VM list
  • GUI: allow starting of headless VMs from the GUI
  • GUI: allow reset, shutdown and poweroff from the Manager window
  • GUI: allow to globally limit the maximum screen resolution for guests
  • GUI: show the full medium part on hovering the list of recently used ISO images
  • GUI: do not create additional folders when a new machine has a separator character in its name (bug #6541)
  • GUI: don't crash on terminate if the settings dialog is still open (bug #9973)
  • Snapshots: fixed a crash when restoring an old snapshot when powering off a VM (bug #10491)
  • Settings: sanitise the name of VM folders and settings file (bug #10549)
  • Settings: allow to store the iSCSI initiator secret encrypted
  • E1000: 802.1q VLAN support
  • Storage: implemented burning of audio CDs in passthrough mode
  • Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images
  • Storage: added support for QED images
  • Storage: added support for QCOW (full support for v1 and readonly support for v2 images)
  • Storage: added readonly support for VHDX images
  • Solaris additions: added support for Server 1.11 and 1.12
  • Windows hosts: no need to recreate host-only adapters after a VirtualBox update
  • Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options
  • NAT: improvements for the built-in TFTP server (bugs #7385, #10286)

    Please refer to the VirtualBox 4.2 Release Candidate 2 Changelog for a complete list of changes and enhancements.

    Binaries for Windows, MacOS, Linux and Solaris can be downloaded here.

    Important Note: Please do not use this VirtualBox Beta release on production machines. A VirtualBox Release Candidate should be used for early evaluation and testing purposes.

    Report problems or issues at the VirtualBox Beta Forum.

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  • Comments:

    VM BOX Version 4.3.2v90405 either has a bug or it does not support 64 bit ISO?


    All you work is in 4.2.18v88780 and now I CAN'T run any ISO 64 bit server. YOU REMOVED the old version and I don't have the installation.

    Posted by HELP on November 25, 2013 at 05:05 PM CST #

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    Bob Netherton is a Principal Sales Consultant for the North American Commercial Hardware group, specializing in Solaris, Virtualization and Engineered Systems. Bob is also a contributing author of Solaris 10 Virtualization Essentials.

    This blog will contain information about all three, but primarily focused on topics for Solaris system administrators.

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