I've followed all of the instructions in the parallels manual and I cannot get OS/2 warp 3 to boot from the CD. It appears to not recognise the CD and continues on to look at the C drive. I have the same problem with MSDOS 6.22. I've noticed on the forums that many people are struggling to get OS/2 to boot from the CD and ISO images on CD and on the hard drive. My machine is a MacBook 1.1 with 512 MB, 2GHz Intel Core Duo. Does anyone know how to do this. By the way, unfortunately parallels appears to ignore emails to its customer help service email address, that's why I'm looking for help here.