不需要重开机就能在同一台电脑使用好几个OS。VMware主要的功能有：1.不需要分区或重开机就能在同一台PC上使用两种以上的操作系统。2.完全隔离并且保护不同OS的操作环境以及所有安装在OS上面的应用软件和资料。3.不同的OS之间还能互动操作，包括网络、周边、文件分享以及复制贴上功能。4.有复原（Undo）功能。5.能够设定并且随时修改操作系统的操作环境，如：内存、磁碟空间、周边设备-will not re-boot the computer using the same number of OS. VMware main functions are : 1. No zoning or re-boot will be on the same PC using two or more operating systems. 2. The complete separation of different OS and the protection of the environment and the operation of all installed in the above OS software applications and information. 3. The OS also between the interactivity, including network, peripheral and file sharing, and affixed with a copy function. 4. Resilient (Undo) function. 5. Set to be amended at any time operating systems and operating environments, such as : memory, disk space, peripheral equipment, etc.