I replace my optical drive with a SSD.
The installation was easy, no problem.
But when I install the OS on the SSD and boot from it, I can no longer enter sleep mode. I've tried to google the problem but have found nothing about that kind of behaviour. Anyone got a suggestion?
Nope, installation was easy and the guide was good.
9.5 mm PATA Optical Bay SATA Hard Drive Enclosure
MacBook Pro 15" (Model A1150) Left Fan