I'm working on figuring out my options here, so thought it might be useful for anyone else now or in the future that may be doing the same if I lay it all out in one post. From what I've been able to gather in this thread, for a bootable drive for the Apple IIGS, you need one of the following:
1) Obtain an original Apple SCSI card and install a SCSI hard drive (or maybe a SCSI2SD)
2) Obtain a CFFA3000 with a Compact Flash card (or USB flash drive) (
link)*
3) Obtain a ReActiveMicro Drive/Turbo IDE Controller and a Compact Flash card (
link)*
4) Obtain a FloppyEMU and a MicroSD card (
link)*
The first three options appear to be the best as you can run them along side physical floppy drives whereas due to daisy chain issues, you cannot use the FloppyEMU as a hard drive and be able to use floppy disks as well.
Additionally, since the first three options allow use of physical floppy drives, it would seem that those would also be the best options for being able to transfer files between the Apple IIGS and a Mac since the options for reading .PO and/or .HDV files (which the Floppy EMU uses) are largely non-existent from what I've been able to find, unless you are running Windows and can run
CiderPress.* Is that right? (If you're running Mac OS X, you would need a classic Mac with a floppy drive to serve as a bridge between the Apple IIGS and a modern Mac.)
The alternative to floppies would be using AppleTalk so the Apple IIGS can network with a Mac that supports AppleTalk. This would work with any of the four options since it would not require a floppy drive to transfer files.
As far as an operating system for the Apple IIGS, is it best to stick with GS/OS 6.0.1 or is the non-Apple release of GS/OS 6.0.4 (
link)* safe to use? The appeal of the latter would be (I am assuming) the ability to use the current actual date, which is something that's addressed in the ProDOS release (Thunderclock year table) included with GS/OS rather than within the OS itself.
If I have any info wrong, please let me know.
*Links provided for convenience. I have no ownership or affiliate relationship with any of the sites.