Close functions?

[dummy decoy]

Hey guys I just burned a data disc with nero, but I forgot to select the "No Multisession" thingy before burning, so now I wanna close the disc so no one can burn data on it anymore. I couldnt find how to end the multisession so while searching online I came across this seemingly great and simple program imgburn!!!

 

I saw that it has a Close function but is further divided to Close Track, Close Session, and Close Disc.

But Im a noob, so I dont know what they mean! I dont wanna ruin the disc so do I have to do something in order to properly close a disc?

[LIGHTNING UK!]

Do all three in order top to bottom.

[dummy decoy]

Ahhh. Thats it? Thanks!

[LIGHTNING UK!]

Yup, don't worry if they error out, just cancel it and move onto the next one.

 

It won't damage anything.