Trevor, if you cant figure it out, you may want to post to the MacDV group. They are very knowledgeable about DVD issues. David On Oct 22, 2005, at 6:31 PM, Dr Trevor J. Hutley wrote: > Al-Powerbook, OS X 10.4.2 > > I am making backups/archives of many of my files on to DVD using > Roxio Toast 6 Titanium 611. > > I made several this morning. > > When I was making a backup of my eyeTV files, I got this error > message: > > The drive reported an error: > Sense Key = HARDWARE ERROR > Sense Code = 0x03 > > then > > The drive reported an error: > Sense Key = ILLEGAL REQUEST > Sense CoDe = 0x30, 0x05 > CANNOT WRITE MEDIUM - INCOMPATIBLE FORMAT > > about 90% of the way through writing the DVD. > > It seems that 4.17 of the 4.2 Gb of files was in fact copied, and > the DVD works fine. There are perhaps a few files not copied. > > Does anyone have any idea what these error codes mean, and their > true significance? > > I am using Imation DVD-R 8x but only burning at 1x. > > This happened when I put another DVD in and repeated the burn, so > it was not the DVD media (unless both are defective in the same way). > I then tried one DVD from the bottom of the spindle, to see if it > is the same. It was. 4 min 14' left to burn, same error message. > > Next, I tried reducing the size of the DVD content to just 4.0 Gb, > from 4,2. > No problem.... > > How do we explain that ? Bug in Toast? > > regards, Trevor > >