Hi, I'm Tom. I use DVD Shrink to backup my DVD's, and I have always used a Pioneer DVR-107D using an IDE interface. Now I've got the Plextor PX-716SA DL, which uses the SATA interface. With both Burners, when I select backup, I get to the Burn Setting's tab, which I select Maximum, for speed. And then below speed, is this other stuff. (Now this is where I get confussed) Using the Pioneer Burner with the IDE interface: This box is checked. |+| Book type DVD-Rom - The entire line is not highlighted. This box isn't checked. |_| Burn at least 30mm (DVD+R/RW high compatibility mode) The entire line is highlighted. _____________________________________________________________________ Now using the Plextor DL, with the SATA interface: Should I check this box? |_| Book type DVD-Rom - The entire line is now highlighted. This Box isn't checked. |_| Burn at least 30mm (DVD+R/RW high compatibility mode) _____________________________________________________________________ I'm just a bit confussed here, and want to know if I should place a check mark in the box next to (Book type DVD-Rom)? I know you never want to check the other box: Burn at least 30mm (DVD+R/RW high compatibility) ____________________________________________________________________ Can anyone explain to me what these two different choices are for, and when you would want to use them? ____________________________________________________________________ Thanks so much for your time in reading my question. Sincerely, Tomroxie