Hello everybody! Hope someone can give me a hint! I recently came accross a couple of Fusion-io PCIe SSD cards... price was unbeatable so I took them right away hoping that my Mac Pro 5,1 could do the rest... Sadly, that's where the dream ended... I installed the cards and they were not recognized by disk utility. So I checked the system profiler and alas! They show up in their respective PCIe lanes but with no driver installed! Thinking it was going to be an easy fix, I started looking for the respective drivers but that prooved to be quite a challenge since Fusion-io was acquired by SanDisk recently... Finally found some drivers for OS X 10.9 and 10.10 which evidently didn't work on Sierra... [ UPDATE ] I installed Mavericks on a second HDD. Then installed the drivers downloaded from SanDisk website. Volume shows up fine but since the drivers have to be loaded from the OS, the card may not be bootable... :-( Now I am upgrading Mavericks to Sierra to see if the drivers are passed to the new system and I can get the Fusion-io Drive to show under Sierra. [ UPDATE 2 ] No success on passing the drivers from Mavericks to Sierra... Lost the Fusion-io when upgrading the OS. Tried disabling SIP (System Integrity Protection) and installing from root. No luck either... :-( ---------- Anyone there with a solution to make these pretty cool SSDs work on a Mac Pro 5,1 with Sierra? The exact model of the PCIe cards I have is: Fusion-io ioScale 2 (825GB) F11-003-825G-CS-0001 Any help or comment is highly appreciated!