Sansa m230 Problem

When I plug my m230 into my computer, the MP3 player says, “Not Enough Space for Music DB. Please Free 8MB.” How do I get rid of this message? My MP3 player is on MSC, but I don’t see a Removable Disk option for my MP3 player in my computer.

When that happened to mine I could not even format it.  So, I decided it was dead and bought the m250.