Hello, I bought a Lacie 2TB drive. At first I intended to use it to back up Windows partition. So, I reformatted it as exFAT. Then, I changed my mind and wanted to use it as a TimeMachine backup drive. I went to disk utility to reformat the drive as Mac OS Extended (Journaled) format. However, TimeMachine keeps saying that it cannot find the target disk and as a result, backup failed. I reformatted to Mac OS Extended (Journaled) format again but same problem. Know how to fix this?