Incomplete finalize of DVD using Handycam

I’m using DVD Handycam DCR-DVD203 for one year.Last week after recording my son’s soccer match started to finalize disc using power adapter.Finalize operation stopped at last 10 seconds.I guess because of incomplete finalize the disc couldn’t work on handycam and computers anymore.It says ‘format error’ on camera and don’t recognize on Computers.What should I do to get my son’s videos and pictures back from dvd? And why did it happen?Please guide me to solve this problem

Would something like ISO Buster be able to read the unfinished disc back? If I’m not mistaken (if I remember correctly), there should be a feature to do that in ISO Buster.