In this video we show you how to boot your MacOS off an external NVME M.2 SSD hard drive. This is a huge upgrade in performance over your fusion drive on your iMac because of the speed of the NVME drive. This should work with most iMacs with the correct ports and in the video we use the 2017 iMac 27".

We will provide step-by-step instructions on booting your MacOS off an external NVME SSD hard drive. Many people don't know that it's super easy to boot your OS off of external drives on Apple computers and in this video we selected and external NVME SSD for pure performance. It should take less than 1 hour to complete this build.

The first step is building an external NVME SSD and we have a video on this here -    • Build Fastest External SSD NVME M.2 S...  

After you build the hard drive then follow our instructions in the video to boot of the super fast NVME external hard drive and increase the performance of your Apple iMac.

I created a few other videos in the past you may want to check out also.

Boot MacOS from a Samsung QVO external drive -    • Boot From External SSD on a 2017 iMac...  

Boot MACOS from external SSD on a 2011 iMac -   • Boot Mac OS From External SSD HD Encl...