I downloaded the Adafruit distro. The file is 2.6 gb as a .img file. However, opening the file shows 30 megabytes worth of files, and trying to use disk util to simply write the .img to an SD card isn't working. As it stands, I'm meant to 'copy the files' from the img to the SD card, but the PI doesn't see it as a valid distro, which isn't surprising given the file size. What's up with that? Is the distro just totally broken?