Nope, simpler than that, just did a
Originally Posted by grahammechanical
then did a
cp raring-desktiop-amd64.iso saucy-desktip-amd64.iso
zsync reported 74.8% complete, as of that date, goes ahead and completes the zsync
sudo zsync http://cdimage.ubuntu.com/cdimage/daily-live/current//saucy-desktop-amd64.iso.zsync
which gets me a saucy.iso I can boot directly from the hard drive,
then I use an exec to do my setup....
I do this early in the U+1 when it looks like the U+1 daily build will install, using the last previous .iso. Don't know what will happen with the next "rolling release"?