Bought a spare compact flash card and would like to format it in SFS, to transfer stuff between my Morph OS machine and my Amiga 1200. However, the format option only seems to permit "MSDOS Disk".
If I use HDConfig, it shows up as USB CF Reader (since thats how its connected) and give me an option of a variety of file systems (NTFS, various FAT etc) but no amiga types.

What am I missing?

I'm a new user, but I've been using several CF cards since the moment I booted MOS for the first time. I never formatted any of the cards and I have been swapping them between my A1200, my MOS and OS4.1 system without any hiccups.

I'm using 4GB Transcend cards. The MOS system recognizes them immediately and shows them on my desktop along my other partitions, RAM Disk, etc.

Right click onto the hdd symbol next to the partition field and select RDB.

Once you did SFS will even be default for any new partition.

Geit

And because you're using it on classic system too, I'd advice you to install 68k version of SFS on that CF card's RDB. Use some filesystem identifier which won't confuse any other version of the filesystem. Use for example SFS\03 (0x53465303) and then you can freely use that card on all amiga-like systems without needing to worry if filesystem versions aren't totally compatible.

Using SFS formatted media is better than default FAT formatted, because then you can unpack or even install stuff into that card with faster machine and all protection bits and other file attributes are preserved. Then you can just copy them over to slower machines.