'Load file from disk.  Converts object to mode FILEINMEMORY'

def load(self):

    if (not (self.mode == FILEONDISK)):
        return False
    try:
        fh = open(self.diskpath, 'r')
        self.update(fh.read())
        fh.close()
        self.mode = FILEINMEMORY
    except:
        return False
