[sgroup] duplicate Roland CD-ROMs

Hello all, I thought it should be possible to duplicate my sample CD-ROMs in Roland S-760 format using the Apple OSX disk utility. But when I try to create a disk image file from any of my CD-ROMs the disk utility says "read/write error" after reading the CD-ROM. It does work with a CD-ROM in Akai S-1000 format though. I remember I could duplicate those CD-ROMs back in the OS 9 days, using Adaptec Toast. But my OS9 computer and its CD burner quit working a long time ago. Any other possibilities, preferrably using an Apple computer? Ingo