After using my USB drive to record programmes from my TV, it's no longer readable on my Mac

In fact 5 "Linux" partitions were created on my 120GB Toshiba USB drive:

• The Mac seems to think that the filesystem is Linux based. Is this true?
• What format are the video files?
• Is it some Sony-only file format based on vendor lock-in? Or are Sony more open these days?

Message was edited by: dvdsmpsn

Message was edited by: dvdsmpsn