On Sun, Dec 18, 2022 at 5:03 PM Bill Cunningham bill.cu1234@gmail.com wrote:
losetup /dev/loop0 FILE to mount the loopback,
mkfs.vfat -F 32 /dev/loop0
and detach and xxd -g1 FILE.
Use mkiso to create FILE, and then you can hexdump FILE directly. You can also then "mount FILE /mt" (or similar) if you want to examine the data as a mounted file system.