Greetings Folks! First post and very new to macs. I just got an imac and love it so far. Have been a pc user (and still am) and have a western digital external drive with crazy info on it that I got running on my mac without having to format it to fat32. Everything was working perfect up till last night and now I can't access any of the contents on the drive. It seems that everything is there as the drive only shows 62GB of 500GB free but the folder is empty. I tried to run a disk repair using disk utility on my mac but everything is grayed out. I also tried to run a disk check on my pc but windows cant seem to access the drive without wanting to format it first. Desperately need some advice. Thanks in advance!