can anybody please help i have just installed toast 7 on my intel mac mini but every time i try to copy a disk
in 'disk copy' toast reads the disk then ejects it stating 'couldn't determine the free space on the disk'. i have checked the drive has its current firmware and my software is up to date. please any ideas.... thanks

I'm not familiar with that error. However, choose Save as Disc Image when in the Copy window instead of clicking the burn button. When that is finished select the disc image using the Image File setting to burn your DVD.