eject dvd1 and insert dvd2 to continue

Hello,

i am installing matlab, and the problem: eject dvd1 and insert dvd2 to continue appears.

I tried different solutions, no one worked.

first, i tried to eject the dvd1 then mount the dvd2, but there was no drive to eject at all.

second, the folders are appears as archive.

third, i tried to compine dvd1 and dvd2 in the setup folder, didn't work too.

Any other solutions?