Hi guys, Currently , I boot up High Sierra from external T5 Samsung SSD and run my Lightroom and Filmora video editing App on the separated (unmounted) internal SSD of the fusion drive. Since my 1TB fusion drive is already split into HDD and SSD, is it possible to install and boot up MacOS High Sierra from the tiny SSD (28GB) space? I’ll run my (move) my MacOS application to my External T5 SSD. (500GB) Is this doable ? Any pros and con? The reason I asked is the internal SSD is x2 to x3 faster than my external T5 SSD where I currently boot my MacOS High Sierra from it.