Not sure if this is the correct place. I have recently brought 50x 25GB Blank Blu-ray Disc. I have been a while few holidays this year. I am planning on backing the memories on to those discs, once i burn them can i keep the disc i don't want to close the disc to is there way to keep the burned disc open once it have back it up? I can add more to memories to later date and work on any computer? i have used up 875GB of 1TB, 1 year ago i had used 300GB. Using daisy disk i have 235 Gb of pictures and converted movies. Is there any other ways to see what is using up my disc storage?