This is exactly what I did after 10.8.3 was released.

If you're running 10.8.3 from a FULL installer instead of updating from 10.8.2, the version of Disk Utility needed to automatically create the Fusion drive is there. There are also some videos on YouTube on this. I'm not proficient at Terminal myself and I just made sure I followed what was documented. The Terminal commands are very simple to use and well documented. You can do it on the older macs, but you have to get into the Terminal and do some under the hood stuff, which is right at the edge of my skill level. Regarding creating a Fusion drive, I read that is technically only supported by the 2012 Mac minis. Since you have your old drive attached externally, go into the Macintosh HD and grab the files you want to copy onto the SSD. MA will migrate the whole folder's content. For example, you may not want to move ALL your Downloads folder over, but only a few files. With the Migration Assistant, I don't think you can pick and choose what you want to move over. Regarding restoring the software from the time machine backup of the old HD, is there any important difference between restoring software from time machine, as opposed to restoring software using the migration assistant? Normally, I would get the internal 500GB down to 100GB of data, and then clone it on the SSD, and make the swap, but I'm assuming that cloning the drive will potentially replicate the source of the slowness, so I'm assuming that isn't the best way to proceed.

I have a 3 TB hard drive that I can use to back up everything on the 500 GB hard drive, but I'm assuming that time machine isn't the best way to back everything up, since I won't be able to restore the machine on the 120GB drive that I want to boot from. I can figure out how to accomplish each step, I just need some overall guidance as to how I should approach the whole thing. So, I would like to replace the 500GB internal hard drive with a 120GB SSD Drive (Samsung 840 Series), and put a fresh install of Mountain Lion on the SSD, put the 500GB in an external enclosure, and see if that fixes the problem.Ĭan someone explain the best way for me to do this, in a step by step list? I have tons of processes running in the background all the time, and have installed hundreds of programs over the last two years, so it could be anything number of things that are somehow messing up Mountain Lion. I ran TechTool Pro 6 to do a scan of the whole machine, and it didn't detect anything out of the ordinary.Īt this point I am guessing that it's probably a software issue. I have a mid-2011 Mac Mini, and it has been running very sluggish, even when there are multiple free GB of RAM and the processor is only at 10 to 20% of capacity.

Replace mac hard drive