I want to copy some truetype fonts from Mandrake 10 folder to Knoppix's /usr/share/font/ttf, but kde tells me that the file can't be copied.
although in knoppix/home/ folde, I can create a text file, but when I typed some word in it and save it, kwrite told me can't write to file.
in terminal i typed su, it does not need a password and go in to root user, I do the previous job, but it couldn't work, too.

My question is how to configure knoppix to allow me to modify all of the folders in / ? just as other linux?

another question: can I configure knoppix to let is save my settings and new made files after I restart it?