A computer is a device that accepts information (in the form of digitalized data) and manipulates it for some result based on a program or sequence of instructions on how the data is to be processed. Complex computers also include the means for storing data (including the program, which is also a form of data) for some necessary duration. A program may be invariable and built into the computer (and called logic circuitry as it is on microprocessors) or different programs may be provided to the computer (loaded into its storage and then started by an administrator or user). Today's computers have both kinds of programming.
Create a Virtual Machine of your Existing Computer With a Click
Virtualization, in simple English, is a interesting technology that helps you run multiple operating systems on the same machine.
For instance, if you are running Windows Vista on a computer, you can create virtual machines for Windows XP or Ubuntu and run these operating systems on your existing Vista machine just like any other Windows application.
Windows Virtual PC, Virtual Box and VMware Workstation are some popular applications that allow you to create new virtual machines on a Windows PC but the only problem with these programs is that they require you do everything from scratch.
That is, if you want to create a new virtual machine, you will have to install the whole operating system first using the original installer DVD and then configure it with your favorite programs. This can be both time consuming and difficult.
What if you could use your existing Windows computer, that already has all your favorite programs installed, and turn into a virtual machine?
Convert your Computer into a Virtual Machine
While it has always been possible to convert an existing hard drive into a virtual machine, the process was difficult and often required expensive programs.
Well, not anymore. There's a new utility from Microsoft that makes it both simple and free to convert an existing installation of Windows into a virtual machine ready to run on any other computer.
Microsoft’s Sysinternals team has released a simple application called Disk2vhd, that lets you easily migrate an existing computer to a virtualized hard drive (VHD). It's a tiny utility doesn't even require instillation.
Create Virtual Hard Disks with Disk2VHD
When you run Disk2vhd, it will immediately show you all the drives and partitions on your computer that it can migrate to a VHD. Simply select a drive that you wish to create a VHD file from and click “Create.” Disk2vhd will convert the hard drive into a VHD file even if the computer /drive is currently in use.
When the Virtual Machine VHD file is created, you can run it in any desktop virtualization program including the free Windows Virtual PC, Virtual Box, or VMware Player. You can also mount the virtual machine as a standard hard drive in Windows 7, and can even boot from it if your computer is running Windows 7 Ultimate.
You may use Disk2vhd to create virtual machines of your Windows XP, Windows Server 2003, Windows Vista and higher machines, including x64 systems.
Usage Scenario
Let's say you have a computer that is already running all the software programs you frequently use, but you now want to move to a new computer or upgrade your operating system. You can then consider creating a virtual machine of your old machine using the Microsoft utility and this will help you use all your favorite programs (with the same settings) on the new machine.
You can also use virtualization to create a ghost image of your hard drive in a single file and this will be handy in the event of a disk failure.
Disk2vhd is an useful tool that will make it much easier for you to enjoy the benefits of virtualization without being too technical.
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Android is a mobile operating system initially developed by Android Inc. Android was bought by Google in 2005. Android is based upon a modified version of the Linux kernel. Google and other members of the Open Handset Alliance collaborated on Android's development and release. The Android Open Source Project (AOSP) is tasked with the maintenance and further development of Android.
Canalys reported that in 2010 the Android O.S. was the world's best-selling smartphone platform, dethroning Nokia's Symbian from the 10-year top position.According to Gartner Symbian is still slightly ahead on sales if some legacy non-Nokia Symbian smartphones are included in the 2010
Android has a large community of developers writing application programs ("apps") that extend the functionality of the devices. There are currently over 200,000 apps available for Android. Android Market is the online app store run by Google, though apps can also be downloaded from third-party sites. Developers write primarily in the Java language, controlling the device via Google-developed Java libraries.
The unveiling of the Android distribution on 5 November 2007 was announced with the founding of the Open Handset Alliance, a consortium of 79 hardware, software, and telecom companies devoted to advancing open standards for mobile devices. Google released most of the Android code under the Apache License, a free software and open source license.
The Android operating system software stack consists of Java applications running on a Java-based, object-oriented application framework on top of Java core libraries running on a Dalvik virtual machine featuring JIT compilation. Libraries written in C include the surface manager, OpenCore[17] media framework, SQLite relational database management system, OpenGL ES 2.0 3D graphics API, WebKit layout engine, SGL graphics engine, SSL, and Bionic libc. The Android operating system consists of 12 million lines of code including 3 million lines of XML, 2.8 million lines of C, 2.1 million lines of Java, and 1.75 million lines of C++
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