USB Drive Not Showing Up in Disk Utility I have a 64GB USB drive that was unplugged halfway through formatting it, and now it isn't recognized by Disk Utility. diskutil list also doesn't bring it up. I have tried formatting it on a Windows computer with no luck either. It gives an error that it cannot be formatted. Windows at least sees the drive, but Disk Utility doesn't at all. 

Are there any low level solutions that might work to re-format the drive or is it probably a goner that would need to be replaced?
If you have the ability to burn an .iso and boot a livecd, Gparted should be able to format the USB drive.
Gparted