mo...@rodents-montreal.org (Mouse) writes: >> ** /dev/rsd1e >> Invalid signature in boot block: 0000
>Yes, I get that too. I haven't tried to chase it down, since, as >thorpej said, there is actually no filesystem in the usual sense there. It's meant to be used as a "filesystem", not for general storage but for the feature that copying a uf2-file to it updates the firmware.