i'm making backups of my purchased blu-rays that I own in fear of it being destroyed in a fire or scratches. I have discovered that # of Blu-Ray movies actually have more sectors/data than a blank BDR or BDRE, how is that possible? Back in the DVD5 or DVD9 days... it was the same across the board. a DVD9 could have been burned to DVD9 Dual Layer no problem. Touch of Evil UK import for instance has 1GB over the limit. 47GB vs. 46GB that BDR and BDREs allow... this is strange... I just thought *ALL* BDs were supposed to adhere to the same standard just like DVD9 rips can always be burned on DVD9 Dual Layers. I never had to overburn on those no matter how much the original DVD9 was, I always found a way to fit it. BD25 that are over can fit on BD50 if needed but anything over BD50 I have no idea... what do you do on these? if I overburn it would error out and the BDRs would be a coaster. if I truncate I get playback errors and burned copy won't verified properly against original ISO or BDMV folder.