13″ MacBook Pro Mid 2012 – Compatible SSD Interface and Form Factor

I have a late 2011 15" 2.2 quad core i7 macbook pro, and after using it with a 7200 rpm hard drive for about 2 months I decided to upgrade it to the Seagate Momentus XT 500GB Hybrid drive. I am a iOS programmer and I can't tell you what a big difference this hard drive made in my computer. I did a couple of tests before I changed out my old hard drive like boot up time and opening programs and such. With my 7200 RPM hard drive my boot up time was 31 sec. and with the hybrid drive my new boot up time is 20 sec. I strongly recommend the hybrid drives. Seagate also just updated there hybrid drives with twice the amount of solid state memory instead of 4 GB they now have 8 GB. I hope this helps!

I've the same problem using late 2008 Macbook Pro running 10.8.3 and have decided to keep the HDD in the shock mounted area due to superior protection.

I've got a Sandisk SSD installed in the optibay and the original HD in the main bay. Deep sleep worked fine with just the hard disk installed. Now that I've cloned it and boot from the SSD instead, the Macbook refuses to go into deep sleep. Instead it sits there in normal sleep mode with the white light on the front of the machine flashing.

I tried moving the sleep image to the HD but got the same crash that you experienced. Mind you, the man page for pmset does state that it has to be on the root drive!

I'm reluctant to swap the disks round because the main bay offers better shock protection for hard disks with the rubber mounts. Looks like I'm stuck with the problem unless Apple fix things.

As it stands, you need to choose either sleep compatibility or shock protection when connecting a SSD and HDD to a MacBook Pro.