I have been searching high and wide for a solution to this problem but I can't seem to find anything relevant. I know I can't be the only one suffering from this problem. I have a mid 2012 MacBook Pro 15 inch. I removed the stock hard drive, and installed a 180 GB SSD as my primary boot drive. Here are it's specs from System Information: Media Name: Corsair Force GT Media Medium Type: SSD Protocol: SATA Internal: Yes Partition Map Type: GPT (GUID Partition Table) S.M.A.R.T. Status: Verified I then installed the OCW Data Doubler, and removed the optical drive. In this bay, I installed a 750 GB HDD. Here are it's specs from System Information: Physical Drive: Media Name: ST750LX003-1AC154 Media Medium Type: Rotational Protocol: SATA Internal: Yes Partition Map Type: GPT (GUID Partition Table) S.M.A.R.T. Status: Verified I have downloaded TRIM Enabler, and enabled TRIM for the SSD. I have set up my SSD as the boot drive. I have my home folder (with all media) on my second hard drive, since it is substantially bigger. I saw this in a blog post when I first set this up 6 months ago, and it works fine when things are going normally... ...but, the problem is that the drive will eject "randomly". Since my home folder is on the second hard drive, the ejection requires me to completely reboot. The whole process takes about 5-10 minutes. I also say "randomly" because it isn't exactly random. It sometimes happens out of the blue, but oftentimes it will eject when the drive is being used (like backing up the disk, editing video, etc.) Also, my computer tends to get much more hot, and will even power down in the summer when it gets too warm for the system to cool itself (even if it is on a hard surface, not on my lap). I feel like I have something misconfigured with the hard drive that is causing these problems. Is there anything that I can do to fix this? Thanks!