DVD Burner no longer recognising blank disc

[gabrielantonio]

Hello,

I'm using Kubuntu 14.04 LTS on an old 32-bit P4 system and it is working well, mostly.Recently I tried to burn an iso image to a blank dvd-rw disc. Both K3B and Brasero requested that I put a blank disc into the burner. However, I had placed the disc into the burner before starting each of those programs.To test the burner, I placed into it the dvd-rw disk onto which I had successfully burned the Kubuntu iso image. On rebooting the system, it was able to display the Kubuntu "Try Kubuntu/Install Kubuntu" welcome screen from that dvd-rw disc.

Please help.

I didn't find the right solution from the Internet.

Locked because this is not a support site for DVD burning.