A stock 'regular' Amiga cannot boot from a CD-ROM drive because the CD file system is not in ROM; even the OS 3.9 update CD needed a boot floppy. If the CD file system were put in the DENEB Flash, would the system be able to boot from CD like the CDTV and CD32? I'm not talking about an external USB drive, but specifically the SCSI CD-ROM drive in an A4000T on the built-in controller.
I have not seen this disussed anywhere yet in the past year, which I find surprising because I imagine most people that can plug in a DENEB are also running a SCSI or IDE CD-ROM drive off the built in controllers.
A drive doesn't mount itself from alone. Just putting in the Filesystem won't trigger anyone to attempt mounting an iso9660 image present in the cdrom -- this mechanism only works for RDB volumes that either have their dos id present in filesystem.resource or in the RDB itself. Also note that not all Filesystems will be able to be made resident and work without Dos available. Overall, with some extra glue resident tag it's not impossible, though.
