empty hard drive, 50% used (no files??)

[Tom Sparks]

I have empty hard drive, but 42,584 MB is being used
I have run sudo rm -rf *.* on the drive, same result

# Total Space: 64,001 MB
# Space Used: 42,584 MB
# Space Free: 21,416 MB

what can i do?

tom_a_sparks