Niolator wrote:But how can I read the data on SFS partitions then?
Higher version numbers shouldn't break compatibility. Even the publicly available version 1.279 should be able to read it. So either store the 68k version of SFS into the RDB of the disk or add the PPC version to your Kicklayout, then the partitions should appear.
If you add a second harddrive to the system, be sure to remove the "last disk" flag from the first one. Should be done automatically by Media Toolbox or HDToolbox if you select the first disk.