HELP! my WD 250gig hard drive was accidentally unplugged while I was uploading pictures onto it. Now i'm unable to mount it. I have a Macbook Pro 2.16 GHz Intel Core Duo 1GB 667 MHz RAM I ran disk utility on startup, and it is detected, but I am unable to repair it. I also ran Data Rescue II, and just continues to try to detect my external, and when I unplug the USB it detects it. It's whenever I unplug the USB, that it detects it. Could it be the USB cord? I tried to replace it with one from my printer, but nothing changed and it still doesn't work. Can someone please give me any troubleshooting on what to do next? I appreciate anything! Thanks!