I have a Mac Mini running 10.7.4 via an LG E2250V monitor and a Logitech wireless keyboard and mouse. I am unable to get the option key to bring up the disk screen, or the C key to run an external disk after startup. I have scanned the forums and tried the following:
- used a wired keyboard and mouse
- run disk utility
- unplugged everything from the ports except the keyboard and disk drive
- zapped the PRAM
- run in safe mode
I shut down the Mini, wait ten seconds, start up and hold the option key down immediately after the chime. The hard drive runs down after about a minute and the fan goes berserk. I've tried keeping the option key down for ten minutes. Nothing. I've done the same with the C key. The EDD accepts Drive Genius 3 disk which run for about a minute, then stops, after which the hard drive stops and the fan goes berserk. Again, I've held on for ten minutes. Nothing. In all other espects the Mini, screen and keyboard works perfectly. I really would like the ability to run an external disk, for example, to use DG3. Any ideas?
The Apple Store was an interesting experience - in Spain, that is. It took three people to solve my problem. The first problem was that they were unable to find a mains cable for a Mac Mini - in fact they viewed the Mac Mini as though it had just dropped from an alien spaceship. I was then given an appointment in the Genius Bar and passed to a person who purported to know about them and who spoke tolerable English (better than my Spanish!). We did communicate and he did understand my problem but, after spending fifteen minutes looking for suitable gear in the form of a screen, a mouse and a keyboard (wouldn't you think this would all be ready to go?), he set it all up and felt that it might be the hard drive or a RAM problem. I explained that it had been working perfectly just twelve hours ago until I made my foolish boob. He then called a colleague who spoke excellent English, looked at the scree, listened to the HD, unplugged everything, unscrewed the base, took out a memory card, put back the base, plugged everything in and off we went. That took two minutes and now I;ve seen him do it, I would have a go if the same problem arose again. Just be careful taking off and replacing the base and remember to replace the ram after you've got it working.
Thanks for the two of you who gave me advice. I hope the above is useful to others.