There are several ways other than natural disasters that could cause you to lose data. You could accidentally delete a folder or incorrectly run a synchronization that overwrites it. Perhaps you skipped an iteration of OS X when upgrading to the next one. Maybe you have to roll back a few changes after a crash. However it happened, data loss happened and your files are gone. There is hope if you lost files on your Mac. IUWEshare Mac Hard Drive Da