make cd rewritable if it is only writeable

Solution
In the old days, one can write to a CD, not finalize it, and pass it onto somebody. That somebody would write on that CD, not finalize it, and pass it back. As each person writes to the CD, everything previously written, every previous write session, is no longer available for reading. That was at that time the only way a CD was "re-writable".
In the old days, one can write to a CD, not finalize it, and pass it onto somebody. That somebody would write on that CD, not finalize it, and pass it back. As each person writes to the CD, everything previously written, every previous write session, is no longer available for reading. That was at that time the only way a CD was "re-writable".
 
Solution