How many OSes do your computer have?

[Tripti]

got only one OS on my PC (Windows XP). 

[ultimatum]

Whats the point of having so many OSes for diffent use? I use one and its plenty enough. Okey, I understand if one OS goes unstable the second one can be used as a back up  source to get back all your valuable files and information other than that, whats the point?

[michaewlewis]

Differnet Operating Systems do different things better.
Here's why I personally would use different OSes...
If I want to do general office stuff or games, I would use Windows.
If I wanted to do web design and programming, I would use linux.
If I wanted to check my email and browse the internet, I would use BeOS.
Each OS gives a different feel for every task, and I just decided I like a certain OS for them.

[ultimatum]

I see. But whats the advantage for example in using Linux when programming?

[michaewlewis]

Some of the programming tools in linux don't work in windows. I like to use Quanta+ when I'm doing web development because it helps fill in tags, functions, variables and other elements. I just haven't found a suitable windows alternative for it.