Le 10/01/2018 à 05:34, The Wanderer a écrit :
the sizes of the images, particularly in the case of multi-image sets, are determined based on what is expected to be able to fit on a DVD or a CD.
Not only. Otherwise, the #1 (bootable) DVD images would have a size of 4.7 GB, like subsequent DVD images. Instead, they have a size of 4 GB only. AFAIK, this is so that it can fit in a 4-GB USB stick or as a file in a FAT filesystem.