24.7 Invoking grub-probe

The program grub-probe probes device information for a given path or device.

grub-probe --target=fs /boot/grub
grub-probe --target=drive --device /dev/sda1

grub-probe must be given a path or device as a non-option argument, and also accepts the following options:

--help

Print a summary of the command-line options and exit.

--version

Print the version number of GRUB and exit.

-d

--device

If this option is given, then the non-option argument is a system device name (such as ‘/dev/sda1’), and grub-probe will print information about that device. If it is not given, then the non-option argument is a filesystem path (such as ‘/boot/grub’), and grub-probe will print information about the device containing that part of the filesystem.

-m file

--device-map=file

Use file as the device map (see Device map) rather than the default, usually ‘/boot/grub/device.map’.

-t target

--target=target

Print information about the given path or device as defined by target. The available targets and their meanings are:

‘fs’

GRUB filesystem module.

‘fs_uuid’

Filesystem Universally Unique Identifier (UUID).

‘fs_label’

Filesystem label.

‘drive’

GRUB device name.

‘device’

System device name.

‘partmap’

GRUB partition map module.

‘abstraction’

GRUB abstraction module (e.g. ‘lvm’).

‘cryptodisk_uuid’

Crypto device UUID.

‘msdos_parttype’

MBR partition type code (two hexadecimal digits).

‘hints_string’

A string of platform search hints suitable for passing to the search command (see search).

‘bios_hints’

Search hints for the PC BIOS platform.

‘ieee1275_hints’

Search hints for the IEEE1275 platform.

‘baremetal_hints’

Search hints for platforms where disks are addressed directly rather than via firmware.

‘efi_hints’

Search hints for the EFI platform.

‘arc_hints’

Search hints for the ARC platform.

‘compatibility_hint’

A guess at a reasonable GRUB drive name for this device, which may be used as a fallback if the search command fails.

‘disk’

System device name for the whole disk.

-v

--verbose

Print verbose messages.