Virtual Machine – Solution to run Multiple Operating System

The present study deals with the Development of Multiple Operating Systems on the same Computer. This means that one can keep<br>more than two operating Systems on the same Computer (e. g. if one has latest version of Microsoft windows vista it is possible to have older<br>version of Microsoft Windows XP on the same Computer) and simultaneously can carry on the development of multiple application software<br>with different versions by installing Virtual PC 2007. In the IT world Virtualization refers to the use of virtualization software that allows the<br>physical hardware of a single PC to run multiple Operating Systems simultaneously in Virtual Machines. The virtualization software simulates<br>enough hardware to create an environment that allows an unmodified guest operating system (the one running inside a Virtual machine) to be in<br>isolation on a host operating system (the one running physical computer system). This setup is very useful particularly, in a given scenario where<br>most of the educational institutions simultaneously offer different courses and different levels of a course syllabus, with limited resources at its<br>disposal. If we need to teach advanced version of operating systems like “Microsoft Windows Vista”, along with application software<br>“Microsoft Office 2010” and “Microsoft Internet Explorer 7” and at the same time, older version of Operating System like, “Microsoft Windows<br>XP”, along with application software, “Microsoft Office 2003” and “Microsoft Internet Explorer 6” as another subject for a different class in the<br>same Computer lab. This can be done by installing different operating system on different partitions of the disk but such a setup requires<br>rebooting the computer every time the user intends to shift from one operating system to another. This problem can very-well be solved by<br>Virtual Machine. User can load two Operating systems like, Microsoft windows Vista and Microsoft Windows XP and then can install<br>Microsoft office 2010 on the first Virtual Machine and Microsoft office 2003 on the second. Just like all application software click the icon of<br>virtual machine operating system on desktop of windows 7 or select from start button to switch over to the other operating system as well as<br>Application software. The study deals with how to create, copy, and configure virtual machines. Microsoft Virtual PC 2007 to run multiple<br>operating systems at the same time on the same physical computer.

本研究围绕单台计算机多操作系统开发展开。即单台计算机可搭载两套以上操作系统（例如，当用户安装了最新版微软Windows Vista时，仍可在同一设备上部署旧版微软Windows XP），并通过安装Virtual PC 2007（Microsoft Virtual PC 2007）同步开发多版本应用软件。在信息技术领域，虚拟化（Virtualization）指通过虚拟化软件，使单台个人计算机的物理硬件能够在虚拟机（Virtual Machine）中同时运行多个操作系统。该虚拟化软件会模拟足够的硬件环境，使未经过修改的客户操作系统（即运行于虚拟机内部的系统）能够在宿主操作系统（即运行于物理计算机的系统）中实现隔离运行。该方案在教育机构场景中尤为实用：多数教育机构资源有限，却需同时开设多门课程及同一课程的不同层级教学内容。以同一计算机实验室为例，若需同时开展两类教学：一类是讲授微软Windows Vista等高级操作系统，搭配微软Office 2010、微软Internet Explorer 7等应用软件；另一类则是将微软Windows XP等旧版操作系统，搭配微软Office 2003、微软Internet Explorer 6等应用软件作为另一门课程面向不同班级授课。这类教学场景可通过在磁盘不同分区安装不同操作系统实现，但该方案需用户在切换操作系统时重启计算机。虚拟机可完美解决这一问题：用户可同时加载微软Windows Vista与微软Windows XP两套操作系统，并在第一台虚拟机中安装微软Office 2010，在第二台虚拟机中安装微软Office 2003。用户可像启动普通应用软件一样，点击Windows 7桌面的虚拟机操作系统图标，或通过开始菜单切换至另一套操作系统及其配套应用软件。本研究详细阐述了如何创建、复制与配置虚拟机，并借助微软Virtual PC 2007在单台物理计算机上同时运行多套操作系统。