Im hardly a power user but I’ll attempt to answer your questions.
I dont think the drive “appears” in emote like it does in an OS browser window. I think as you go to perform functions regarding reading and writing from it, that’s where you work off of the drive.
Sessions I save onto the H9000, I really dont save them to my computer. Same with algorithms and chains. You will probably find more manageability storing these things on your computer where you can make file folders to your liking. AFAIK the H9000 doesn’t provide for this kind of management. I have not really made any preset chains because I enjoy building them from a blank start. You can save and name chains though if you wish.