Samsung TS H552U Problem reading dual layer dvd-R

Hi I just bought a Verbatim DVD-R DL dual Layer dvd (8.5GB)
But my dvdRW is having a problem reading it… it keep saying medium not present. anybody have any solution for this?

My DVD RW is Samsung Tsstcorp TS H552U USO7 firmware.

Please only post the same question once. I’ve already posted against your other thread in the hardware forum.
The rules of this forum are very clear about double (cross posting) like this.

Sorry… reason being, I was ignorant to realise the fact that they have a special place in this forum dedicated for samsung dvd only.