/usr/bin/grub-probe

Usage: grub-probe [OPTION...] [OPTION]... [PATH|DEVICE]
Probe device information for a given path (or device, if the -d option is
given).

  -0                         separate items in output using ASCII NUL
                             characters
  -d, --device               given argument is a system device, not a path
  -m, --device-map=FILE      use FILE as the device map
                             [default=/boot/grub/device.map]
  -t, --target=TARGET        print TARGET
                             available targets: abstraction, arc_hints,
                             baremetal_hints, bios_hints, compatibility_hint,
                             cryptodisk_uuid, device, disk, drive, efi_hints,
                             fs, fs_label, fs_uuid, gpt_parttype,
                             hints_string, ieee1275_hints, msdos_parttype,
                             partmap, partuuid, zero_check [default=fs]
  -v, --verbose              print verbose messages (pass twice to enable
                             debug printing).
  -?, --help                 give this help list
      --usage                give a short usage message
  -V, --version              print program version

Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.

Report bugs to <bug-grub@gnu.org>.