I looked at the size of my iPhoto library, and it's around 22G.
I have been trying to backup the library to DVD. I selected all the events, and hit "burn" in the share menu.
There was too much for one dual layer DVD, so I de-selected events until iPhoto said what was selected would fit onto the DVD, with around 30M free.
When I tried to burn the disk, it seemed to go fine until it was finished, then I got this message:
"Burn Failed. The burn to the SuperDrive drive failed. There was an error producing data for the burn."
Do I have to leave a certain amount free on the DVD for the burn to work properly ?