Hey guys, So basically I have two identical external hard drives. I accidentally plugged the NTFS windows external into my OS X system and it froze. When I then plugged it into my Windows 7 system it can't read the disk and is telling me to format the drive. It also assigned a letter to the drive (Local Disk F: ) instead of the usual Expansion Drive name it's given when plugged in. If possible I'd like to fix this issue without losing all the data on the drive.. Any useful advice on how to access my files? Thanks!