I purchased a used Droid A855 without the SD card and have been having a few issues with it. I previously had the Thunderbolt and prior to that the original Droid (Am waiting for Droid 3 or Bionic). When I went from the Original Droid which befell a terrible accident to the TB, all my apps reloaded, etc..., but when I went to the used Droid, they aren't coming back. If I go to market.android.com they are all listed, but they aren't listed in the "My Apps" section of the Android Market on my phone. My Amazon App store items did load. With it being a used phone, still stock, that just a hard reset would be in order. It would clear out anything from the previous owner and just start fresh. My question is, on a hard reset, will it erase my SD memory card or just the phones internal memory?