Paul, I appreciate the information, it is informative. But it's to vague for me. For instance Thomas says that If the CF card has been partitioned with HDToolbox, which I believe it has
Then you don't need the mount file and you can use the "mounter untilitly in 3.9. But when I do this it does not find the card. Which is what Loth77 also reports, Thomas then says you can go to the CLI and type "Mounter d compactflash.device" Which finds the card as "not ready" and when I select it and click mount is say "RigidDiskBlock not found". Thomas also says to check "ToolTypes" does he mean on the CFO icon, and then check for what? It just can't be this hard to mount a FFS disk on an OS running FFS...
Thanks Brad Hansen
I wrote you a really long reply yesterday but my crappy android phone crashed and my message was lost. Anyway, if you can boot this CF card then it means it has an RDB which in turn means that you should be able to mount it with Mounter as thomas says.
If you examine the CF0 file in devs/dosdrivers (or storage/dosdrivers) you'll see it makes reference to fat95 which is a FAT file system. We don't want FAT in your case - we want FFS. But you can't just change the reference to fastfilesystem because FFS requires geometry entering into the mountlist (CF0) unlike fat95 - hence like thomas said, use Mounter to mount the CF partition. I'd try this myself but have no Amiga access for a week almost...