Oct 3 2012
Weird. I had a 500gb Toshiba Canvio USB hard drive plugged into a usb hub on my iMac, and I could not delete files from it. I tried to format it, and that didn’t work either! Yikes .. I thought I had a dead disk or maybe it was unhappy since it was a USB 3 drive being used on a USB 2 port… I decided to plug it into the keyboards USB port instead of the massive usb hub and it worked – I was able to format the disk there .. no problems. So if you have problems with a USB device, try another port .. it seems there aren’t really a lot of people following standards on the USB bus.