I've noticed that my external hard drive, which used to be mapped to my E: drive, has now been renamed F:
I thought this was a bit funny but didn't think anything of it until I tried to install Norton Anti-virus. I was unable to install the software because of an error on the E: drive. So it seems like there's a hidden E: drive on my machine.
I'm not sure what to do to get rid of whatever is currently in E: and then remap my external hard drive to it.