I know this is Amiga 101 but it's been too long! :-)
I've a 16GB CF in my A600 and I've created 1 partition of just under 4GB and formatted with PFS3, no problems all works great.
The 2nd partition I can quick format OK (again with PFS3) and I can put files on it but after I reboot it is back to an unformatted state :-(
Pointers on what I'm doing wrong ?
Have OS 3.9 with BB1 and BB2 installed and idefx97 installed (actually found my old key!)
As you're running OS 3.9 on your A600, you obviously must have an accelerator board (with at least an 68020) fitted, as this is a pre-requirement to run OS 3.5/3.9?