Subject:   -61- Why does 'df' report incorrect numbers for a filesystem
                mounted from a Sun?
Date: 29 Apr 1995 00:00:01 EST

  Sun's filesystem reserves space, usually 10%, and Sun's 'df' reports
  only the unreserved space. SGI's filesystem (efs) does not reserve
  space, so SGI's 'df' doesn't correct for reserved space.