clean install Mavericks from Yosemite

[Matdacat]

Hi,
i was wondering if anyone could help me. i bought a 2009 mac mini with Yosemite freshly installed. what is the easiest way to fresh install Mavericks from Yosemite? i have a iso disk that i have downloaded previously (torrent) i am not sure if its bootable how do i tell if it is or not?

 

[Natzoo]

Well if its a torrent I'm not sure, because they are not 100% safe. But they are other safe ways to downgrade

 

[Matdacat]

what other ways can i downgrade

 

[janitor3]

If you had Mavericks before, download it again, quit don't install, then make a bootable flash drive.