Currently Being ModeratedJan 19, 2013 10:51 AM (in response to Twister_mac)
D'oh! Forgot the ole' pram check. But that didn't fix it. First reboot after pram reset does indeed boot to /dev/disk0 but subsequent routine restarts again fail (boots to /dev/disk2s2).
Your suggestion leads me to think the CR 2032 logic board battery has slipped into eternity & needs replacement. Hopefully that'll do it...