Compact Flash and OS4.0 Classic

hello, I have this BPPC-BVision A1200 running OS4.0.
I am want to use a CF2IDE adapter, setted as slave, with a 4GB CF to pass data to/from my PC.
I have formatted the CF as FAT32, but the Amiga won't see it.
Actually, after cold boot, I have to do a warm reset, otherwise the Amiga won't start, but this is no problem.
If I run Media Tools, it sees the CF corrrectly, but even if I partition it with FFS, after reset I dont see any CF icon on Workbench.
Anyway, FFS won't work with a PC, so should I use Fat95? Ans how?
Thanx for your advices