Harddisk icon at startup; whats wrong?
1. Redefine the startup disk in System Preferences (again and again..)
2. Checking hardware with Onyx and Apple Hardware Test: no problems
3. Resetting the PRAM: time, date and soundlevel are saved well, so battery is ok(?) The startup disk also is saved in the PRAM.
4. Resetting the SMC
5. Replace harddrive
Maybe something is wrong with the Apple keyboard or USB ports, so the mini receives an Option-key event at boot? Or there is an invisible person in the room pressing the the key..
Mac mini (mid 2007), Mac OS X (10.6.2), 120GB HDD, 2GB RAM