Show drive letter on selection on Windows
Show drive letter on selection on Windows

Showing `\\.\PhysicalDriveN` makes no sense for a Windows user after
selecting based on drive letters on the dropdown.

fedealconada/resin-etcher,resin-io/herostratus,cedricve/etcher,resin-io/etcher,resin-io/resin-etcher,resin-io/etcher,resin-io/herostratus,resin-io/etcher,fedealconada/resin-etcher,resin-io/etcher,resin-io/etcher,cedricve/etcher,resin-io/resin-etcher,cedricve/etcher