QNX6: Bug in the bootloader?

I have an IDE and a SCSI drive. QNX6 is on SCSI primary. The system
boots only when I disable IDE, otherwise the bootloader hangs. Is there
a bug in the bootloader?

Perhaps a workaround would be to boot the system from a small primary
partition on the IDE drive. I would appreciate if somebody could tell me
how to do it.