"CF0: is mounted"
Still "no disk present"?
Do a fresh format of the cards on another machine and try again (be sure not to NTFS, exFAT, EXT*, JFS, XFS etc format them).
I know people have had trouble with CF cards, but as long as I stay at the bigger brands I have had zero problems with em for PCMCIA but some won't work as a PATA device.
Kingston works great for me, but honestly I probably have near 100 CF cards and all big brand cards worked without any problem for me, some shady questionable brands cheap out on the onboard controller and won't work on the miggy but all others I have tried works flawless :S
What cards are they? Size and brands?
Edit: also try the other version of CDF on aminet.