7 Replies Latest reply: Dec 5, 2012 10:21 AM by Frank Caggiano
rogan_g Level 1 (0 points)

I updated my Snow Leopard to Mountain Lion and have had only minor issues with some software but I plugged in a USB flash drive and went to format it, it now appears only in disk utility and not on the desktop. I have tried restarting and reseting with the drive in and out, I tried it into my macbook and it does exactly the same there. I can't do anything in Disk Utility so can't access it in any way and it says errors if I try to eject it from DU. I'm not normally stumped but I can't figure this out at all. I'm hoping that someone here could give me an idea that I haven't thought of as it's a large Flash Drive and I really would like to keep using it.

Thanks in advance for any help anyone can offer.

iMac (27-inch Late 2009), OS X Mountain Lion (10.8.2), Recent update causes USB Flash Driv