The difference seems to be in /casper/:
Legacy ISO: 2.7G filesystem.squashfs
New ISO: 1.3G minimal.standard.live.squashfs 2.5G minimal.squashfs
The difference seems to be in /casper/:
Legacy ISO:
2.7G filesystem.squashfs
New ISO: standard. live.squashfs
1.3G minimal.
2.5G minimal.squashfs