AmigaBruno, with all the problems you seem to be having, maybe you should try a different approach instead?
Here is my suggestion: Get a CF card which works with your Amiga, put it in there, and let it stay in your Amiga. Now get another CF card, but don't do anything to it, just let it stay FAT formatted. Then you can use this for transferring files from the PC (via card reader) and to your Amiga (via CF-PCMCIA adapter).
This is what I plan to do soon. I've already got a PCMCIA CF card reader, but I need to transfer some files from Aminet onto my Amiga CF card hard drive first, otherwise it can't use it. After this, I may occasionally want to use more than one CF card as a hard drive, so the best way of doing that would be to use a cable with more than one mini IDE connector on it, but I don't know if there are any available.