Is there an alternative way e.g. a small tool to close a multi session / finalize a DVD?

My problem is, I created a dvd backup of a section of my HD (using Nero Ultra v6) and chose to leave the disc open. I am unable to access the disc via explorer, but if I load up nero, I can see the data has been written. I think I used almost the entire disc, and when I go back in to nero to add a text file and to finalize, it produces an “illegal Disc” error.

Back in the early days of cd copying, I could use Easy CD creator to close a session without burning anything to it.

So, is there a way around this, or is there a 3rd party tool simply to finalize a disc?

as, on testing the DVD disc on my work machine, (a standard dvd-rom drive, it is accessable here.

TIA

Steve.

You didn't mention what kind of a DVD you used, but DVD+R discs have a better multisession compatibility than DVD-Rs. In addition, most (old) DVD-ROM drives are said to have problems reading multisession DVDs.

NEC 1300A 4x +/- RW

-R disc

Anyway, managed to answer my own question, as I dont like posts going stale.