Is it mandatory to download Mountain Lion in all of Mac PCs
I have downloaded the Mountain Lion OS X in my new iMac. I would like to upgrade my Macbook pro(Contains Snowleopard) and my father Mac too.
I have copied the Install OS X Mountain Lion.app file , and tried to open in my Macbook pro. It is not at all opening. But If I right click and give Show Package Contents, I am able to find the dmg file inside it. So, now I am able to open the launcher for installing the OS.
But I wonder, whether this could result in any problem. Because I heard that the apple will not recommend this kind of things. My internet connection is also slow, where I can't download this OS everytime.
Can anyone tell me , if we install the OS by using show package contents etc, options, is that legal ?? Will it be a problem ?
iMac, OS X Mountain Lion (10.8.2)