My first A3000 came with KS 1.3 and 2 Workbench 1.3 disks. Because OS 2.0 was under development when the A3000 was released, it aslso came with KS 2.0 and several WB 2.0 disks. This original OS 2 was primitive. Later WB 2.1 was released and fully devloped but I think the KS was the same. Also there were two major revisions of the A3000 motherboard, the first (yours) with KS images on the HD (and a bare minimum Bios on rom), and the second with KS on the rom. Unfortunately, the rom sockets were NOT pin for pin compatible, though a mismatch was not destructive. There was also something about a rom daughterboard, but, I have forgotten the details.
Anyway, the KS disk is not normally formatted (therefore unreadable), but there was a way to back it up and copy it to your HD. I'll have to read-up.
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My first big box Amiga was a 3000D. It came with alph roms and a superkickstart disk. When you first setup a hard drive it will ask for the superkickstart disk. You will have an option (I think it was holding down both mouse buttons while booting) of which ks and os to boot inot (1.3 or 2.0). Later I upgraded to 2.1 and then to 3.1. 3.1 required 3.1 roms so I had to buy the rom tower as well as mine was an early rev7 3000.
It looks like you will need the original superkickstart disk to get both the 1.3 and 2.x working. BTW you can make the second 2.1 partition actually softboot into 3.1. Wish I could find the disk for you but haven't needed it since going to 3.1 roms.
Stew