Hey Macrumors fans! Alright. Long story short my Girlfriends dad has this macbook pro (late 2011) that had a failing drive that i posted on here. Apple replaced the drive but Lion is pretty out dated and he wants something new, a fresh install and since he did not like Yosemite i suggested well Either Mountaion lion or Mavericks. Now here is where it pissed me off. I had a copy of the app of mountain lion that i got from a buddy that had it previously downloaded from the app store so he re downloaded it for me. I used the image to install it on my macbook 3,1 using MLpost factor. Then last week i used the same image to install on his system and i tried burning that image to dvd. I went into the contents of the app and got the install ESD image and used disk utility in Snow Leopard to install it. When i tried it on his computer it took over 15 minutes to get into the DVD from boot then once installing it said 20 minutes after that it said 200,000,000 hours and then a message said failed to download additional packages or something on the lines of that. I also got Mavericks from another friend on my floor and once i got it on my system it showed the 4gb. But just for kicks i double clicked on it and it gave me the messsage saying this computer cant run it. A few hours later i tried burning it to DVD and it failed too. Then i looked again and no the mavericks app is 24mb. Is apple trying to stop me from using these apps? So what im asking is, is there a better more secure way of doing this so these apps dont currupt? Like if i burn the install ESD on to a DVD lets say right away, will i still get an app from it? or just burn both the app and the install esds on a disk to prevent curruption?