Multiple OS's on the same HD

[olarwummy]

can i install two type of windows software on one particular HDD and making use of both... i mean can i install windows 10 and wiondows 7 on a paricular hard disk,, and when i changed the users i will be able to manipulate them

[Allan]

Please stop naming threads "Hard disk, please read first". Aside from the fact it makes us think they are duplicate threads, the subject title has nothing to do with your question. Please use a subject that relates to the question you are asking. I'm going to rename this thread now.

[DaveLembke]

Google saved the day ... http://www.howtogeek.com/197647/how-to-dual-boot-windows-10-with-windows-7-or-8/

[patio]

He cannot install even 1 Win version...not sure how he's gonna install 2.

[soybean]

I got the impression he is thinking of a way to switch between OS without restarting but I could be wrong.  If that is what he wants, then that calls for running one OS as a virtual machine.

[bob1286]

There are two ways of doing it.  I would let the OS configure it for you long as you install the older copy first