Hi everyone. This is copied from the post I made in the NVME thread. Thought it deserved its own thread. #1189 I seem to be stuck in an install loop. I bought a Late 2013 MacBook Pro Retina 15" (A1398) off of eBay without a hard drive. I have a Samsung PM951 and the SinTech ST-NGFF2013-B adapter. I booted into ubuntu, formatted the drive, and booted into my High Sierra USB and formatted the drive as APFS. When going through the installer, it said my drive had to be Mac OS Extended (Journaled). So I reformatted it as Journaled and continued to the install screen. When around "2 minutes remaining", the screen would turn black and would go to the apple logo with the loading bar. When the bar reached around 1/8th completion, it would go back to the Mac OS Utilities main menu, as if I just booted back into the USB drive. I've been stuck here no matter how much I try. I have another mac laying around with an apple hard drive. Should I possibly put that into my 15" and reinstall High Sierra, then put the SinTech adapter in and install High Sierra? I'm confused as to what to do.