Diskinfo

diskinfo -v /dev/ad8 /dev/ad8 512            # sectorsize 80026361856    # mediasize in bytes (75G) 156301488      # mediasize in sectors 155061         # Cylinders according to firmware. 16             # Heads according to firmware. 63             # Sectors according to firmware. ad:6QZ2XJB6    # Disk ident.

diskinfo da0 da1 da0    512     73407868928     143374744       8924    255     63 da1    512     73407820800     143374650       8924    255     63