An OS is usually an Internal program that controls the machine it is in.
User Interface
Yes, if your computer operating system will recognise it as an external storage device
Software is written to use the facilities provided by a particular operating system. A Mac's default operating system is Mac OS X. A Mac can also run the Windows operating system. If the Mac has the required operating system to support the software on the external drive then it can run it.
A user memory for an operating system are the devices in which data is stored. These devices can be built into the computer, such as the hard drive, or they can be an external device, such as a USB pen drive or external hard drive.
Operating System Deployment is a server technology from Microsoft for network-based installation of Windows operating system. The technology is the successor to Remote Installation Services.
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System calls provides interface use of services available in the operating system.
operating system
The kernel is the essential center of a computer operating system the core that provides basic services for all other parts of the operating system. A kernel is designed to be a central core to the operating system - the logic that manages the resources that the hardware has to offer.
The BIOS. The BIOS provides services to the OS and the OS provides services to the applications.
An operating system runs common services for computer programs and manages the computer hardware resources. An operating system is necessary to run application programs.
The most used operating system used is windows xp.second is windows vista as of 2009.Linux is the best operating system for some people. Linux is fast and you can have a lot of applications running at the same time with networking and printing + a lot of external services and devices (like a sub or CD ) you can use this at the same time and the system wont get so easily overloaded!!