Problem burning backup system disk for 10.6

Question

Finally appreciating the safety added by burning backups of my 10.6 system disks, I created a 7.6gb disk image on my desktop. I don't have Toast Titanium to span the data, so I used Slices to cut it into two files, letting each part fit a standard DVD.
Now, though, Disk Utility won't burn either of them to a DVD.
What am I missing in order to create backup 10.6 disks?
Thanks,
CB

Answer 1

In the line "DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW" the "DL" stands for double layer, so yes, you can burn (write to) DVD-R DL & DVD+R DL disks. Essentially all "SuperDrives" can.
Just FYI, the "DAO" stands for "disk at once," which means you can't burn a DVD & leave it "open" to write anything else to it later. "TAO" stands for "track at once" which means (for CD's only) you can write more than one volume to one CD, until you "close" it with a DAO write.
For DVD's, the closest you can come to TAO is to use -RW or +RW discs, which can be erased -- but the Superdrive doesn't support rewritable DL discs -- I'm not even sure such things exist.
The nomenclature is arcane, so don't feel like the only one who is oblivious to its meaning. It took me a long time to figure this out.
Message was edited by: R C-R