Do the usual configs with rom and what type of machine.
Then take hard drives
Add directory (have a folder made for this)
In the box device name write dh0 (no : after)
In the box volume label write workbench or System
Take configurations and save this.
Take floppy drive and attach the OS.adfs
reset
Do the installation
Then eject all floppys and restart.
Then you are pleased with everything install izarc and lha or zip the content of the folder.
Have 3 boot partitions on the real amiga.
Boot into one of them. Transfer the zip and unpack into the free boot partition. Hope it works out.