Here’s the scenario: you’ve downloaded the firmware for a device that you want to explore in more depth, and extracted out the updates. You dig through them and see that they’re EXT4 systems, and say “jackpot!” while rubbing your hands together in glee. “A quick mount and I can browse to my heart’s content” you say to yourself… and then you see “wrong fs type, bad option, bad superblock on {DEVICE}, missing codepage or helper program, or other error.” Let’s get past that. 🙂