In the original CDTV thread on the exxos forum TF lists the addresses of places in the ROMs to be patched.
I believe it is this single location in cdfs.device which when pactched allows the system to boot from HDD and the CD drive to be used in Workbench
https://www.exxoshost.co.uk/forum/vi...tart=30#p23329
And *possibly* this location in cdtv.device but I am not sure
https://www.exxoshost.co.uk/forum/vi...tart=20#p23293
I don't have a TF536 so I have never tried any of this. I think TF released a 536 FW which patched the address in cdfs.device to allow booting. But I don't know if it was widely distributed (if at all).
TF then went on to try to find all the locations with a memory allocation without a memtype in hope that it would allow booting from CD drive
https://www.exxoshost.co.uk/forum/vi...tart=30#p23375
With no luck.