For Mac repair shops, enterprise tech support teams, and consultants who need to wipe all data off of hard drives before selling or recycling old Macs, there's now a fast way to erase those drives without tying up a machine for a long time. WiebeTech has a new device called the Drive eRazer Ultra (US$249) that promises to make cleaning those pesky drives a fast and easy process. WiebeTech provided a Drive eRazer Ultra to TUAW for testing and review, and the device does an amazing job of wiping all of that private or corporate information off of hard drives. In this review you'll read about what makes the Drive eRazer Ultra such a useful device. To start off with, erasing a computer's hard drive completely usually means