How to delete one of the 3 operating systems?

[Maximus()]

I have 3 operating systems on a single hard disk partitions and would like to know how to delete one of them

[CoModO]

In a same partition 3 systems?
That's impossible, at least in my opinion.
What we'll certainly are 3 partitions with 1 in each system.
To remove a can use Partition Magic that will unite two partitions in a resizing space.

[Dammit]

I think the same thing that my colleague, or better if you do not want to use Partition Magic able to use fdisk DOS.

[Yuvraj]

here is the instruction as to how you can get rid of second operating system:

http://support.microsoft.com/default...;EN-US;q289022

Hope this helps you!