Hi, I've just downloaded Mountain Lion from the App Store, and I wanted to do a clean install over Lion 10.7.5. The problem is, the only way of me copying the install file is to my 1TB hardrive as I only have a USB in 4GB and a DVD-R isn't large enough either. My hardrive is partitioned into 3: Partition 1: Time Machine Partition 2: Mac OS Extended (Jounaled) Partition 3:ExFAT Will I have problems re-installing my files with Time Machine if the installer is on a different partition? I hope I've written this clear so you guys understand. Thanks.