cd-R 90 / 800MB impossible on my rec?

When I try to burn let’s say 100 MB of data on a MMORE cd-R 90 / 800 MB, an error occurs, which says the medium has only 80MB of free space. This is quite frustrating since the disc is totally empty. I’ve used many kinds of software and updated my drivers. My cd-rw device is a GOLDSTAR CD-RW CED 8080B. it’s rather old and I think it does not support media with higher capacity then 74 mins / 650MB. I can’t find any information about this device which tell you what media you can use with the recorder.
Does anyone of you know where the problem is ?

Thanks alot.
cheers, E.