{SOLVED} MBP doesn't hibernate with SSD in optical bay

Discussion in 'MacBook Pro' started by TripleJJJ, Sep 13, 2009.

  1. TripleJJJ macrumors member

    Aug 18, 2009
    Here is my problem :

    I installed an Intel X25-M in the optical bay location with a caddy, Snow Leopard on it. My user files are in the regular HDD in the hard disk bay.

    I tried to calibrate my battery multiple times, and when the battery drops I get the first message "running on low power".

    Then, I don't get the second warning message and when there is no more power (checked with coconut), the computer turns off instantaneously. I lose the launched softs and session data.

    To sum up, the computer doesn't go to hibernate mode, doesn't write informations on the disk.

    I try with and without smartsleep. I checked that the hibernate mode was on, while low on battery power.

    Any Solution guys ?

    **SOLUTION** :

    I swapped the HDD and the SSD, the SSD is now in the regular HDD bay. There is no more problem of hibernation when running on low battery.

    The hibernation file can only be written on the root partition, which is on the SSD, it seems mac OS X doesn't handle properly that file when the SSD is placed in the optical bay via a caddy.
  2. almostinsane macrumors regular

    Feb 9, 2008
    I dont think you can have the OS on that controller. It needs to be on the one connected to the default HD location. Swap your SSD with the OEM drive.

    I moved the OEM 500GB drive to the location of where the optical drive was and put an Intel SSD in the HD location. Everything works great on 10.6.
  3. p3ncil macrumors regular

    Jul 6, 2009
    yes experienced this myself as well.
    think you'll have to move the HDD to the caddy.

    Then again, my SSD refuses to work at the HDD bay... :mad:
  4. TripleJJJ thread starter macrumors member

    Aug 18, 2009
    The system works great apart from this, I'm sure many people have the OS on the SSD in the media bay.

    If I switch the 2 drives I'm afraid I'll feel the vibrations of the hard disk.
    Did you try my configuration before switching ?
  5. fehhkk macrumors 6502a


    Jun 11, 2009
    Chicago, IL
    I would move the SSD to the HDD drive, personally. Your HDD being 5400 rpm, you won't even notice the vibrations there.

    My HDD sleeps under inactivity fine in the optical bay, I've noticed.
  6. krimsen macrumors member

    Dec 15, 2005
    But then you'd have the Sudden Motion Sensor on the SSD, where you will disable it anyway and you won't have it available for the HDD.
  7. TripleJJJ thread starter macrumors member

    Aug 18, 2009
    I forced hibernate mode with smartsleep and check with the command pmset -g, the hibernate mode was on. I've put the macbook to sleep in this mode, it takes a while to write down the informations of sleep on the ssd. Then it hibernates and wakes up properly.

    The problem seems to be only when the battery is low, for calibration for example.
  8. p3ncil macrumors regular

    Jul 6, 2009
    So you are saying as long as hibernation is written, it'll go into hibernation even if my ssd is in the media bay?
  9. TripleJJJ thread starter macrumors member

    Aug 18, 2009
    No, it's independant, even if the file is written, it doesn't mean the laptop will go to hibernation.
  10. p3ncil macrumors regular

    Jul 6, 2009
    oh ok... mean i can use hibernation ever... since my ssd doesn't like the HDD bay and vice versa ):
  11. postbreak macrumors newbie

    Sep 3, 2009
    Can you tell me what optical drive bay adapter you used? MCE Optibay?

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