I had a USB flash device that just stopped working suddenly. When I plugged it in, the following message popped up in Windows: “You need to format the disk in drive before you can use it.”
That was odd because earlier it was formatted with FAT32 and seemed to be working normally (copied files to it). Luckily, I didn’t have anything important stored on it, clicked Format disk and was the presented with the format options and selected Start.
Windows Explored 