In attempting to update the firmware on a third party device, the instructions call for formatting a flash drive to FAT32 and ensuring the update file is the ONLY file on the drive (this includes eliminating hidden files). Showing the hidden files is easy, but I'm having a great deal of difficulty deleting them. I'm able to delete about half of them, but am unable to delete those remaining because I'm prompted that they are still in use. I don't know how to get around this. Is there a definitive way to delete the hidden files? My research so far has found several suggestions, all of which have not worked. If it can't be done, please just say "It can't be done". THANKS! Points of clarification: 1.) I don't need instruction on how to show or hide the hidden files. I know how to do that. 2.) "You don't need to delete hidden files. If you don't know what it is, just leave them alone." Yes I do. I cannot complete the firmware update on my device until they are gone. And since this is just a flash drive that I'm using for a very specific purpose, I have little worry of doing irreparable damage to the drive itself. 3.) "Formatting the drive will erase everything." Well, not really. It erases all visible files, but hidden files are there after every attempt to format.