Two incidents this week, I'm assuming related.
Several days ago, I was using my MBP (15" Mid-2009) under reasonably heavy load and the system restarted itself, which is unusual. I don't think that's ever happened - I've had the occasional kernel panic but never just an outright reboot. On the reboot, I got the "No Access" grey screen. Safe boot did not work. In verbose mode, "cannot mount root" and "media not present" errors regarding my internal HDD (which is about a year old).
I booted from a USB recovery disk and ran disk utility. It repaired a few errors on the partition but the volume mounted just fine. Before shutting down and restarting I used the Startup Disk utility to specify the internal drive as my startup volume (mostly on a whim). Machine booted just fine from then on.
This morning I came downstairs and woke up the same MBP. Logged in and all I got was a spinning beach ball. Menu bar said 3:03 AM (it was actually closer to 8:45). Couldn't bring dock up from being hidden. I was able to force quit a few apps by CMD+SHIFT+OPTION+ESC, but eventually Finder came up and I couldn't force quit. After waiting about 10 minutes, I powered down, rebooted, and got the same grey screen/no entry.
Booted from the recovery disk again, disk utility saw the internal drive just fine. Repaired disk & partition but no errors found this time. Restarted, but machine still would not boot. Back to the recovery partition, went to terminal and manually mounted/unmounted drive no problem. Read/Write arbitrary files OK from command line. FSCK revealed no problems. This time, before rebooting I used the startup volume utility again and manually specified "Macintosh HD" and once again the machine booted just fine.
Any ideas? Disk Utility in 10.8.3 reports "S.M.A.R.T. Status: Verified." None of my data appears corrupt.
The console logs are fascinating
The machine woke itself up at about 11:25 PM ostensibly for maintenance.
3/22/13 11:25:21.000 PM kernel[0]: Wake reason: RTC (Alarm)
3/22/13 11:25:21.000 PM kernel[0]: RTC: Maintenance 2013/3/23 03:25:20, sleep 2013/3/23 01:37:55
3/22/13 11:25:21.000 PM kernel[0]: AirPort_Brcm43xx:
owerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake
Then a few "routine" errors from Twitter & BusyCal. THen the machine hibernated at 11:26PM.
There is nothing in the console log until I successfully booted this morning (nothing from that 3:03 AM timeframe or my waking the machine up at 7:45 AM).
Any ideas on what could be wrong? Cache chips on Hard Drive? SATA Controller?
Several days ago, I was using my MBP (15" Mid-2009) under reasonably heavy load and the system restarted itself, which is unusual. I don't think that's ever happened - I've had the occasional kernel panic but never just an outright reboot. On the reboot, I got the "No Access" grey screen. Safe boot did not work. In verbose mode, "cannot mount root" and "media not present" errors regarding my internal HDD (which is about a year old).
I booted from a USB recovery disk and ran disk utility. It repaired a few errors on the partition but the volume mounted just fine. Before shutting down and restarting I used the Startup Disk utility to specify the internal drive as my startup volume (mostly on a whim). Machine booted just fine from then on.
This morning I came downstairs and woke up the same MBP. Logged in and all I got was a spinning beach ball. Menu bar said 3:03 AM (it was actually closer to 8:45). Couldn't bring dock up from being hidden. I was able to force quit a few apps by CMD+SHIFT+OPTION+ESC, but eventually Finder came up and I couldn't force quit. After waiting about 10 minutes, I powered down, rebooted, and got the same grey screen/no entry.
Booted from the recovery disk again, disk utility saw the internal drive just fine. Repaired disk & partition but no errors found this time. Restarted, but machine still would not boot. Back to the recovery partition, went to terminal and manually mounted/unmounted drive no problem. Read/Write arbitrary files OK from command line. FSCK revealed no problems. This time, before rebooting I used the startup volume utility again and manually specified "Macintosh HD" and once again the machine booted just fine.
Any ideas? Disk Utility in 10.8.3 reports "S.M.A.R.T. Status: Verified." None of my data appears corrupt.
The console logs are fascinating
The machine woke itself up at about 11:25 PM ostensibly for maintenance.
3/22/13 11:25:21.000 PM kernel[0]: Wake reason: RTC (Alarm)
3/22/13 11:25:21.000 PM kernel[0]: RTC: Maintenance 2013/3/23 03:25:20, sleep 2013/3/23 01:37:55
3/22/13 11:25:21.000 PM kernel[0]: AirPort_Brcm43xx:
owerChange: System Wake - Full Wake/ Dark Wake / Maintenance wakeThen a few "routine" errors from Twitter & BusyCal. THen the machine hibernated at 11:26PM.
There is nothing in the console log until I successfully booted this morning (nothing from that 3:03 AM timeframe or my waking the machine up at 7:45 AM).
Any ideas on what could be wrong? Cache chips on Hard Drive? SATA Controller?