Why does MATLAB needlessly access the floppy drive?
This annoying behavior sometimes manifests itself when using the DOS, UNIX, or ! commands to execute external programs. It is likely due to the virus checking software installed on your computer. You can get rid of this behavior by going to the properties of your virus detection software, and unchecking the “Scan floppies on access” option or something like that. The details may depend on which anti-virus software you’re using.