disk-at-once or track-at-once

[rvman]

I burn my backup DVD videos using DVD Shrink to make a disk image, and then burn with DVD Dycrypter. I'm setting up a friend's computer, but the Sony Q58A DVD writer that came with his Dell Inspiron has a glitch (see its entry in the DVD writer section) that makes it unable to write disk images to DVD-R disks (DVD+R disks work fine). So I'm using the Sonic software that came preinstalled on the computer to write the folders generated by DVD Shrink as a data disk. I have the option to burn as track at once or disk at once. What would be the better option or does it matter?
I know it's better to burn audio CDs as disk at once, but i wasn't sure about DVD videos. I've already done a couple of disks using the default track at once, and the disks have been playing fine on my DVD player, but I wanted to use the optimum setting.

[jman98]

Track-at-once is useful only for multisession discs. Personally, I think for non-data discs, there is no good reason for ever using track-at-once and for best results and fewest compatiblity problems. I would strongly recommend that you use disc-at-once. Or to put it another way, it is ALWAYS correct to use disc-at-once and you may or may not have problems with track-at-once discs on some players.

[bevills1]

It's probably no glitch and simply due to the writer being designed for +R media. My daughter has an Inspiron whose Sony writer is designed for +R; hers will burn -R allbeit very slowly, and results in poor DVD player compatibility. You'll probably have to stick with +R media if yours is designed only for that media.