A1286 2011 ssd in dvd place dont recognized

[Dozer]

i have a a1286 2011, the mainboard is modified with the Tiresias from Harald

the osx is a catalina patched from dosdude

the 2. ssd is a 1TB, external via usb no problem, can clean it or copie files on it.
if is in the dvd place i can "see" in disk utilities or in finder the SSD, but it is not possible to clean it or copie files on it
try to clean in disk utility fails
try to copy some files it ask for password and after that it say unknown error -50 and fail.

is this not possible in the patched catalina?
i tryed different adapters, cables and ssd all the same problem, started high sierra from external disk also same problems with the "DVD"-SSD

the DVD-player is working well, read all you want.

PRAM, SMC Reset, all tryed already

 

[2informaticos]

Try another SSD to DVD adapter.

 

[Dozer]

i tryed alread 2 :-(

 

[Dozer]

no idea. my client want to have a 1TB ssd in original place and extendet 1TB in DVD place.
I replaced now the 1TB in original place with a 2TB and build in the dvd player back.
problem for client solved but that was strange. thanks for help.