what's really odd about the emmc models is that the first time I inserted an hdd into my superslim, it asked if I wanted to copy or transfer over the data from the emmc/internal flash (forgot the wording). this took about 20 minutes. I removed and reformatted the hdd at some point, because I was having issues with my psn account and paypal, and I was just going to return the system and hdd. the guy who sold it to me said I could just keep the system, and he refunded my money. I returned the hdd, then stuck the system in a closet for a few years. once I decided to go completely legit, I ordered a new hdd, inserted it into the superslim, and this time it didn't ask me to transfer content. it just acted like it had detected a new hdd. all of my settings, psn account, everything was still intact when it got to the xmb. I don't really understand if it's copied, moved, or what or how an hdd would be able to overcome bad flash files, unless they're actually copied, and it only asked to copy originally, because it detected content? I dunno. it's confusing to me.