Ok, I managed to install 3.1 Kickstart in my Amiga500, I have connected my AlfaData hdd enclosure to it. I am having problems getting the HDD to work though...
If I use Workbench 3.1's HDTOOLBOX, it lists no hard disks.
When I used HDINST from Aminet, it recognized my HDD, let me create a partition (I made a 1 gig partition) etc. After setting up the partition, I let it reboot and when got back in Workbench 3.1 I can see the partition, which needs to be formatted.
When I use workbench's formatting tool it lets me give it a name etc, but after a while, it says not a valid dos disk, or something like that

Any ideas what am I doing wrong?
Thanks! :-D