Postagem original de: Chris Green ,
Well, you can't re-format it in a different filesystem and maintain mac compatibility, since FAT32 filesystem is the only filesystem, that can be read and wrote to by both Macs and PC's, but you could try and defragment it as Markus Weiher suggusted. also, have you opened the drive enclosure, and checked for dust, or anything preventing the cooling mechanisms from working? When drives heat up, they tend to slow down. If it still gives you issues, i would backup your data, as the drive may crash.