VIRTUALIZATION OF OPERATING SYSTEM

Virtualization

Operating system virtualization is a technology that involves tailoring a standard operating system so that it can run different applications handled by multiple users on a single computer at a time.     OR

Operating system virtualization is the use of software to allow a piece of hardware to run multiple operating system images at the same time.

The operating systems do not interfere with each other even though they are on the same computer

In OS virtualization, the operating system is untouched so that it operates like several different, individual systems. The virtualized environment accepts commands from different users running different applications on the same machine. The users and their requests are handled separately by the virtualized operating system.

System requirement

·         VMware/VirtualBox installed (application that allow to run ubuntu inside your window)

·         In order to get any kind of straight performance, you need at least 512 MB of RAM, because you are running an entire operating system (Ubuntu) inside another entire operating system (Windows). The more memory, the better would recommend at least 1 GB of RAM.

·         Every time you want to use Ubuntu, you have to wait for two boot times (the time it takes to boot Windows, and then the time it takes to boot Ubuntu within Windows).

Advantages

·         You do not need to reboot in order to switch between Ubuntu and Windows.

·         The virtual machine will use your Windows internet connection, so you don't have to worry about Ubuntu not detecting your wireless card, if you have one.

·         The virtual machine will set up its own video configuration, so you don't have to worry about installing proprietary graphics drivers to get a reasonable screen resolution.

·         You always have Windows to fall back on in case there are any problems. All you have to do is press the right Control key instead of rebooting your entire computer.

Disadvantages

·         When something goes wrong with a virtualized system it requires complex troubleshooting. This requires expertise and experience of working and troubleshooting Virtualizations problems.