I've got os x Yosemite beta 3 for developers.
I need to format or initialise my macintosh HD and re-install it, but how am i sure that i will be able to re-install it? Because if I go on developer.apple.com and I try to re-download the Yosemite from apple store, it tells me that the code is already used; exactly:
Code already used
So how to know if i will able to re-install the Yosemite beta and not mavericks?
I need Yosemite and i need to format.
Thanks