For client systems (that is, not servers), Windows has somewhere north of 90% of the market.
The way the question is worded, though, forces one caveat: it's far from clear that all of that 90% of users "chose" Windows, as opposed to not having any idea that there was even a choice to make.
If you mean the 'Operating System', it is the portion of the computer the user interacts with to input instructions. Things like Windows and Mac OS X are Operating Systems.
Windows 98: You can't (using the Operating System) Windows 2000: CTL+ALT+DEL then choose "Lock Computer" Windows XP: Same as Windows 2000 or use shortcut Windows Key + L
Vista is not the best operation system. Windows 7 is faster and technically superior, Windows XP is stable and mature and unix/linux is more secure.
It's called a "Dual-Boot" installation. When you start your computer, you will be asked to choose which operating system you want to use.
Windows 2000
depends on which o.s(operating system example linux, xp, vista and so on...) you are running
The computer is running on the Windows operating system.
By dual-booting. You install them both to the same computer and choose between them at boot.
It's The Operation Of Looking For An Operating System On Hard Drives Or CD(s) etc...; and Load It To RAM (Random Access Memory)
Windows laptop computer refers to the operating system in the computer. This operating system is where your virtual memory, task, and files are stored.
Windows is the operating system on a Microsoft computer or an Apple computer running windows drivers. Without windows your computer would not work.
X Windows System:-X Windows System develops the users graphic interface through its "X" based technology.Explanation:-The X Windows System links oyr computer.The X windows system links our computer directly with any application running an another computer and yet it keeps our computer ondependent. We can run a Micro Soft Windows aplication on UNIX Workstation or we can run UNIX on Apple Macintosh system with our X Windows System...................................................................................