Hi madgreek,
I'm not sure whether this will apply to multi-partioned disks, but here's a general tip for getting selections in Sherlock2's Files channel to "stick" across launches:- In the Files channel, check off the volumes or dragged-in folders that you want to be selected by default, then switch to some other channel (e.g., the Internet channel), and then quit Sherlock2. [Occasionally, it might also be necessary to switch back to the Files channel before quitting Sherlock2.]
I do not know if this quirky behaviour of Sherlock2 is a bug or a feature ;-), or if it affects all system configurations, but the above method always works on my older beige PowerMac G3 with one (non-partitioned) disk, running Mac OS 9.0.4 with Multiple Users enabled.
Regards,
--Paul