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soapsudz

macrumors member
Original poster
May 14, 2011
49
0
I replaced the DVD drive on my 2010 Macbook White with an Optibay clone enclosure so I could put an SSD as a second drive. The SSD drive is a Kingston V200+ which supports 3 Gbps for the SATA interface. I did a fresh installation of OS X 10.6, grabbed all the necessary updates, got the drive to boot without any issues.

The system is much faster but there's a hitch: it cannot hibernate. I can manually set the powersaving mode to use hibernation but the computer always goes into the normal sleep mode where it uses battery power to keep the RAM running. For hibernate mode, the power light goes out completely, whereas in normal sleep the light fades and brightens.

This terminal command sets hibernate mode when using the battery. It has to be run as root.
Code:
pmset -b hibernatemode 25

I found the answer to the problem: I moved the SSD to the normal hard drive bay and put the hard drive into the optical drive bay. I did a PRAM reset and voila, the computer now hibernates instantly. Waking up from hibernation takes less than 10 seconds even though I have 8 GB of RAM.
 
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