Little confused myself, but here's my best guess.
A: KEGS the 2gs emulator can neither read nor write physical floppies for the reasons in the other thread. Hardware no workie.
B: By "serial" floppy drives do you mean the late model daisy-chainable drives with the db-19 plug? Short answer is "probably not". The 5 1/4" daisy-drives can in theory work with the old 20 pin header Disk II controller by mucking with cabling (most people want the reverse, though), but the IIgs/IIc+ 3.5 inch drives require one of those specific machines OR a special "smart" controller. The only 3.5 inch drive that might POTENTIALLY work with the disk II controller is the rarer "unidisk" version and even then... I'm not sure about that.
A: KEGS the 2gs emulator can neither read nor write physical floppies for the reasons in the other thread. Hardware no workie.
B: By "serial" floppy drives do you mean the late model daisy-chainable drives with the db-19 plug? Short answer is "probably not". The 5 1/4" daisy-drives can in theory work with the old 20 pin header Disk II controller by mucking with cabling (most people want the reverse, though), but the IIgs/IIc+ 3.5 inch drives require one of those specific machines OR a special "smart" controller. The only 3.5 inch drive that might POTENTIALLY work with the disk II controller is the rarer "unidisk" version and even then... I'm not sure about that.