I recently bought a Seagate External Portable Hard Drive 500GB, I downloaded some MKV movies and I Connected it to my Sony Bravia-40HX750. The Unit was recognized as an external Drive, but I couldn't play the MKV files.

Searching the Sony menu, a message displayed that in order to read the External Seagate drive, it should be re-formatted(I suppose so) and the Data should be lost.

I accepted it, the disk was re-formatted and  now I can programme to write programs from Sony Tv to the External Disk and I also can play them. So it works fine with the Sony TV.

The problem is that the so re-formatted Seagate is not recognized from my Desktop PC, using Win7 or from my Play Station 3. Is there any idea on how can I play the unit on both environments, or how can I format it to play in my Desktop ??

Thanks