I have a USB Lacie iamaKey drive. It originally had a capacity of 8.09 GB (on Snow Leopard). I has been like that for months. Today, I tried to format it with Disk Utility, and now the available space show up as 7.86 GB. I have tried deleting the partition, creating a new one, writing over with zeros, but I can, in no way, recover the lost space. Why can I not use the maximum space of my drive?