Hello
To sum things up, you first need to find a way to plug the SCSI2SD and the old hard drive to your Classic II simultaneously. You need an old hard drive enclosure (can be costly and perhaps you don't have the desk space for it...) or one of
these adapters. Either way, you're going to need a cable to connect it to the Mac. Be careful as most HD enclosures use a Centronics SCSI connector. The Mac doesn't. You'd need a C50 to DB25 adapter if you choose to go that way. If you go for the small PCB adapter (which is what I recommend), get
this cable (not a centronics cable...) and a
male/male gender changer. The only problem is that those cables are also used for serial and not all pins are connected when that's the case. It might be worth checking with the seller before you buy it.
Once the hardware part is covered, you have a few options to do the backup...
1/ Just copy the HD's contents over to a new partition on the SCSI2SD. The system folder may need to be blessed (common issue, google it for more info...).
2/ Use Shrinkwrap (you can install that on the SCSI2SD. I have a partition ready with System 7.5 and Shrinkwrap on an SD card. It's become my backup station.) and create a disk image of the old hard drive. You can use disk copy 6 too but I've had really good results with Shrinkwrap. This later enables you to transfer the image from the SD card to your modern computer and use it with mini vMac or Basilisk II. I covered this method
here.
Good luck!
