I seem to remember that having a HDD and a CD on the same controller can be problematic, even with a correct set up with the HDD as master and the CD Drive as slave.
Tosh.
CaptainFillosan, what is the "status" of the "dynamic" disk, and its "volumes"?
Was there a reason for the dynamic conversion to have taken place - like installing another OS or application or re-partitioning the disk? Or even a deliberate conversion?
It could be a corruption in the MBR - I suggest you have look at the Help in the Disk Management console.
SD