how to work with external device on macbook air
hi, i copied my items from macbook air to external device hard disk.. but now when i access it to other machine of dell it doest open .. whats wrong i m not able to understand.. how should i back up my items to external device so that i can access my files and photos saved to external device on any other laptop. please suggest.
MacBook Air, macOS Sierra (10.12.6)