If you can still get it to a normal PC, try formatting it, and wiping any file systems in place, try again, and if it still doesn't work, format it again with a different file system then before. (If it was NTFS, change it to FAT, and vice versa.)
This worked when OS X didn't detect a SETA drive when I made my hackintosh drive.
This worked when OS X didn't detect a SETA drive when I made my hackintosh drive.



try giving it a nappy?