I purchased a new Yun yesterday afternoon. It boots, it's on the network, I can get to the configure page and I can SSH into the board's filesystem. I have the latest image on an SD card, but my Yun is unable to see it. I reformatted the card as Fat32 using Apple's disk utility, to no avail. The /mnt directory on the Yun is empty, and the only directories that I see in my /dev directory are bsg, bus, input, pts, and shm. None of them lead anywhere. The SD card is a few years old, so it COULD be flaky, but my mac can read it just fine. Any assistance would be appreciated.