Only burns CD-Rw?

Hi all. A friend asked me for help with a weird problem and being unable to help, i would like to know if someone might give me some insight on what’s happening.
He has a Philips CD writer, CDRW4800 series (i think the exact model name is PHILIPS CDRW48P). When he tries to create a CD with Nero (latest update) or other programs, it always says something like:
medium required for the compilation: CD-R/RW
medium type in the recorder: CD-R

Is it possible for a CD-burner to only write to RW? Or can something else be causing this error?

Thanks in advance for the help