Identifying file system types
Use the fstyp command to determine the file system type for a specified file system. This is useful when a file system was created elsewhere and you want to know its type.
fstyp_vxfs(1M) manual page.
To determine a file system's type
Use the fstyp command to determine a file system's type:
fstyp -v special
block or character (raw) device.
Specifies verbose mode.