Drive B:Other error

I have Norton 360 v.4.  Under PC Tuneup/Disk Optimization, it says I need to optimize.  When I click Fix, I get the error Drive B: other error.

 

I can't find the cause or solution to this anywhere.  Any ideas?

Drive A and Drive B are reserved for floppies and most PCs don't have the second one (or even the first these days) but Drive B is used on my PC without a floppy drive if I plug in a USB Floppy drive.

 

There should be a setting in your BIOS SETUP that relates to whether or not the system sees and reports floppy drives so maybe if yours is set to see a second floppy drive if one is there then Norton is upset if there is not?