I have a 2TB external hard drive. I formatted it through osx and everything was working fine. It has/had about 1TB of data on it.
Somebody else in the household runs a pc. His pc could not see the hard drive at all. I told him that it was cos it had to be formatted either to run on a pc or a mac.
Now, it can be seen by a pc and does not even register with my mac.
My awful sinking fear is that all the data on it is now irretrievable. Is that correct, or would there be some way to access it again?