problem creating knoppix config archive

I keep getting this error message whilst trying to save my configuration of Knoppix:

The KNOPPIX configuration could NOT be saved: bzip2: I/O or other error, bailing out. Possible reason follows. bzip2: No space left on device Input file = (stdin), output file = (stdout)

im thinking typing in "bzip -f", which would force overwrite of output files. "bzip2 --stdout" might do something too. It might do something, but I don't want to mess up my computer, because i have basically no idea what I'm doing. Any ideas?

NOTE: this happens when I try to save to the HD or a floppy.