Yesterday, I successfully ? installed a Flash player update, but later my Mac Mini froze and I had to reset Pram? to get it to start. Now in disk utility there is no MacHD listed, it just says "320.07GB Hitachi HTS54503.......Media. My stand alone HD is showing. Do I have a HD problem? Also Super Duper Smart update screen is frozen on desktop.did/will not work. ?cannot see MAC HD?.