grub-probe (GRUB) 2.02~beta2-36ubuntu3.7

Usage: grub-probe [OPTION...] [OPTION]... [PATH|DEVICE] Probe device information for a given path (or device, if the -d option is given). -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, zero_check [default=fs] -v, --verbose print verbose messages. -?, --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>.