One tip to you:
Untill ROM 3.1, all Amigas have some problems booting from 3.5" hd units: sometimes the Amiga don't wait for time enough to the harddrive spins up!:-o
In those cases, you must do a hot-reboot (CTRL + L_Amiga + R_Amiga) 30s after the first boot to "fix" the issue.:-D
Only with 3.1 ROM those annoying "features" don't occurs.... :pissed: