file extension VHD

VirtualBox

VirtualBox is a family of powerful x86 virtualization products 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). See "About VirtualBox" for an introduction.

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), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, and OpenBSD.

VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Sun ensures the product always meets professional quality criteria.

Rescue lost files from a bad or trashed CD or DVD or a Blu Ray disc (e.g. BD or HD DVD). Save important documents, precious pictures or video from the family, your only system backup, ... IsoBuster can do it all !

IsoBuster is a highly specialized yet easy to use optical media data recovery tool. It supports all optical disc formats and all common optical disc file-systems. Start up IsoBuster, Insert a disc, select the drive (if not selected already) and let IsoBuster mount the media. IsoBuster immediately shows you all the tracks and sessions located on the media, combined with all file-systems that are present. This way you get easy access, just like explorer, to all the files and folders per file-system. Instead of being limited to one file-system that the OS picks for you, you have access to "the complete picture". Access data from older sessions, access data that your OS (e.g. Windows) does not see or hides from you etc.

IsoBuster full feature list:

• Data recovery from all possible CD, DVD and Blu Ray (BD & HD DVD) formats :
  CD-i, VCD, SVCD, SACD, CD-ROM, CD-ROM XA, CD-R, CD-RW, CD-MRW, ... DVD-ROM, DVCD, DVD-RAM, DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+MRW, DVD+R Dual Layer, DVD-R Dual Layer, DVD+RW Dual Layer, DVD+VR, DVD+VRW, DVD-VR, DVD-VRW, DVD-VM, DVD-VFR, BD-ROM, BD-R, BD-R DL, BD-RE, BD-RE DL, BD-R SRM, BD-R RRM, BD-R SRM+POW, BD-R SRM-POW, BDAV, BDMV HD DVD-ROM, HD DVD-R, HD DVD-R DL, HD DVD-RW, HD DVD-RW DL, HD DVD-RAM, HD DVD-Video, ... and many more...
• All device access, media access, data gathering and interpretation is done exclusively by the software. It does not rely on Windows to provide or interpret the data and so can work completely independent from Windows' limitations.
• Better Error handling and several retry-mechanisms to aid you in getting the data anyway.
• The use of both generic and alternative ways to get to the data, get the best out of your CD/DVD-ROM drive.
• The use of primary and secondary file-systems to get to the data and/or make use of file system data that might be ignored or ‘forgotten’ by popular OS. Explore the alternatives.
• CDs stay 'readable' after problems (such as Buffer Under-run, ...)
• Read / Extraction from open sessions.
• All sessions, including older ones, are accessible and can be recovered.
• Supports mounting several virtual sessions inside a single DVD+RW or DVD-RW track
• Read and Extraction of files, CD/DVD images, tracks and sessions from all optical media.
• Scanning for lost UDF files and folders.
• Scanning for lost ISO9660 / Joliet sessions.
• Scanning for files based on their file-signature
• Scanning for IFO / BUP / VOB file-systems on VIDEO and AUDIO DVDs
• Scanning for lost, deleted and orphaned FAT files and folders
• Find lost data on CDs, DVDs, BDs or HD DVDs, created with integrated drag and drop applications, otherwise also known as packet writing software. Optimized, but not exclusive, for :
  Roxio Direct CD, Roxio Drag-to-Disc,
  Ahead / Nero InCD,
  Prassi / Veritas / Sonic DLA,
  VOB / Pinnacle Instant-Write,
  CeQuadrat Packet CD,
  NTI FileCD,
  BHA B's CLiP,
  Mircrosoft Windows XP and VISTA,
  Sony abCD, ...
• Support for Direct CD compressed files. Decompression on the fly.
• Built in UDF Reader, UDF 1.02 (e.g DVDs), UDF 1.5 (e.g. Packet writing on CD-R, DVDR, CD-RW and DVDRW), UDF 2.01, 2.50, 2.60 (e.g. BD-R SRM+POW), ...
• Find lost pictures created and saved to CD or DVD with Sony Mavica, other digital cameras or other devices with embedded UDF write functionality.
• Find lost movies created and saved to CD,DVD, BD or HD DVD, with Hitachi, other digital cameras or other devices with embedded UDF write functionality.
• Auto find extensions based on file content to try and give an appropriate name to an orphaned file. This built in file identifier assigns the proper extension to the file so that Windows applications can open the file. Only needed for orphaned files without a name.
• Support for Mount Rainier CD-RW and DVD+RW discs in MRW compatible and non-MRW compatible drives. Auto detection and automatic remapping which can be switched off or forced at all times. Built in MRW remapper / reader. (Built in Method 3 remapper)
• Support for formatted CD-RW discs mounted in very old drives that do not know the CD-RW fixed packet format yet. Auto detection and automatic remapping which can be switched of or forced at all times. Built in Method 2 remapper.
• Built in HFS Reader, supporting HFS and HFS+, the Apple Mac file systems.
• Transparent built in support for Mac Resource Fork extensions in the ISO9660 File-System
• Transparent built in support for Mac Resource Fork extensions in the UDF File-System
• Supports multiple Mac Partitions on one medium (e.g. multiple partitions on a CD or in a dmg file)
• Includes a vast range of features for Mac files support on PC (HFS, ISO9660, UDF), including Mac Binary extraction of files.
• Recover data from blanked or quick formatted DVD+RW media.
• Mpg (*.dat) Extraction and dat2mpg 'in one' from SVCD and VCD
• Ability to create managed image files (*.IBP / *.IBQ).
• Enormous file system coverage and different ways to use them all (find the one suited best for your needs). CDs and DVDs often have different file-systems pointing to the same files. This offers possibilities.
• Rock Ridge (e.g. for Commodore users, Server use, etc.)
• Full FAT12, FAT16 and FAT32 support (for instance on DVD-RAM or BD-RE)
• Finds VIDEO and AUDIO IFO / BUP / VOB file-systems independently from other file-systems
• Transparent support for (open) DVD+VR(W) discs, remapping of the content etc. Open +VR discs' files can be seen and extracted right away.
• Show (and allow to extract) the Nero project file if available on the optical disc
• Support for the CD-i file-system and the different behavior from drives trying to mount a CD-i disc.
• Information and file system properties (a must for FS developers)
• CD/DVD/HD DVD/BD Surface scan to see if there are physical read errors.
• Opens checksum files (*.md5) and automatically verifies the image with the checksum file.
• Check if all files and folders are readable without having to extract all data to HD.
• Single sector extraction. Extraction of CD/DVD/BD/HD DVD blocks (e.g. for engineering purposes)
• Sector Viewer. Check a sector's content in IsoBuster's editor and print or save to HD. Engineers and computer savvy people find missing data making use of Sector View.
• Compile (and edit, save, print) lists of all files that contain physical read errors.
• Compile lists of all files, including their Logical block address (ideal to find the logical play order for mp3 CDs)
• CD-Text support from CD and various image files ( *.PXI, *.CCD, *.B5T and *.CUE image files).
• Creation of image files (*.ibp and *.ibq,*.iso, *.bin, *.tao)
• Creation of checksum files (*.md5)
• Creation of cue sheet files (*.cue)
• Conversion of all supported image files to bin/cue files.
• Handles opening of multi-file image files.
• Extraction of Audio tracks to wave files.
• Play audio analogue. Instruct the drive to play the audio through the analogue output.
• Ability to pause a number of seconds between retries to allow the drive to "recover" (useful for older drives in combination with marginally readable media)
• Creation of multi-file image files or disc spanning to specified size
• Support for bootable CDs and DVDs. Support for the El Torito standard.
  Perfect aid to slipstream Windows installation CDs
• Add, Edit, Delete files found based on their signatures.
• Show file extents. (Show the different parts of a file, when it is fragmented on disc)
• Ability to add/edit extents on custom created files (e.g. Lost and Found and Customizable file system)
• Ability to add a customizable file system (where you can add, edit files, for engineering purposes)
• Support for command line parameters
• Comprehensive help file (also available online)

IsoBuster interprets CD image files, such as:

*.DAO (Duplicator), *.TAO (Duplicator), *.ISO (Nero, BlindRead, Creator), *.BIN (CDRWin), *.IMG (CloneCD), *.CCD (CloneCD) , *.CIF (Creator), *.FCD (Uncompressed), *.NRG (Nero), *.GCD (Prassi), *.P01 (Toast), *.C2D (WinOnCD), *.CUE (CDRWin), *.CDI (DiscJuggler), *.CD (CD-i OptImage), *.GI (Prassi PrimoDVD), *.PXI (PlexTools), *.MDS (Alcohol), *.MDF (Alcohol), *.VC4 (Virtual CD), *.000 (Virtual CD), *.B5T (BlindWrite), *.B5I (BlindWrite), *.DMG (Apple Macintosh), *.IBP (IsoBuster), *.IBQ (IsoBuster), *.NCD (NTI).

IsoBuster also features Language support for over forty languages.

Microsoft Virtual PC

Virtual PC is a powerful software virtualization solution that allows you to run multiple PC-based operating systems simultaneously on one workstation, providing a safety net to maintain compatibility with legacy applications while you migrate to a new operating system. It also saves reconfiguration time, so your support, development, and training staff can work more efficiently.

Whether Microsoft virtualization technology is an important component of your existing infrastructure or you're just a Virtual PC enthusiast, you can now download Virtual PC absolutely free.

Use Microsoft Virtual PC 2007 to run multiple operating systems at the same time on the same physical computer. Switch between virtual machines with the click of a button. Use virtual machines to run legacy applications, provide support, train users, and enhance quality assurance.

Virtual PC lets you create separate virtual machines on your Windows desktop, each of which virtualizes the hardware of a complete physical computer. Use virtual machines to run operating systems such as MS-DOS, Windows, and OS/2. You can run multiple operating systems at once on a single physical computer and switch between them as easily as switching applications—instantly, with a mouse click. Virtual PC is perfect for any scenario in which you need to support multiple operating systems, whether you use it for tech support, legacy application support, training, or just for consolidating physical computers.

Virtual PC 2007 runs on: Windows XP Professional, Windows XP Tablet PC, Windows Server 2003, Windows Vista Business, Windows Vista Enterprise, and Windows Vista Ultimate.