grub-mount - export GRUB filesystem with FUSE
grub-mount [,OPTION/...] ,IMAGE1 /[,IMAGE2 /...] ,MOUNTPOINT/
Debug tool for filesystem driver.
-C, --crypto Mount crypto devices.
-d, --debug=,STRING/ Set debug environment variable.
-K, --zfs-key=,FILE/|prompt Load zfs crypto key.
-r, --root=,DEVICE_NAME/ Set root device.
-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.
The full documentation for grub-mount is maintained as a Texinfo manual. If the info and grub-mount programs are properly installed at your site, the command
info grub-mount
should give you access to the complete manual.