Can't, not enough space on either HDD to clone the other, I'd need a larger 2 TB USB HDD to do that. With two 1 TB HDDs, cloning is impossible. That still doesn't answer my question regarding on whether or not clean installations wipe the HDD.
OH shit, I must've missed that somewhere in the last few pages. But yes, a clean installation wipes the information on the drives.
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I was going to suggest to people who want to keep there current apps and still want a clean install to use PC Mover,but doing this method will require another HD anyways.