I have a LaCie 2TB External Hard Drive (Product code: 301871U) that, after simultaneously falling 76 cm unto a soft surface and the USB cable coming loose from computer, doesn't appear on any Mac. When I hook it up to any Windows computer, the 32GB FAT32 Partition appears and works completely fine, but when I hook it up to any Mac, the main 1.97 TB Mac OS Partition doesn't appear at all and my 32 GB FAT32 Partition appears after half a minute, then within 20 seconds disappears and then an error message appears, stating that I have improperly disconnected it. For the most part, the actual hard drive looks and sounds fine. Additional information is that I have been using it for nearly 13 months prior to this and have 1.5 TB of files on it. What can I do to get it working again?