dreambig207 Posted September 2, 2021 Share Posted September 2, 2021 (edited) Hi! My hackintosh has been running smoothly for about 8 years and has been on high sierra since about the time it came out. I recently bought and installed an NVMe SK hynix Gold S31 SSD which works fine in windows but when it's installed I cannot boot into mac anymore (I get the prohibited sign). Any ideas? I've read that NVMe are supposed to be native in High Sierra and I've searched around a lot and can't seem to find anyone else with the same problem. System 5820K GA-X99 UD% GTX 970 Booting from Samsung Ev0 870 Long time reader, first time poster (i think lol) - if I've done something wrong please let me know Edited September 3, 2021 by dreambig207 wrong capitalization Link to comment https://www.insanelymac.com/forum/topic/348748-can-no-longer-boot-after-adding-nvme-sk-hynix-gold-s31-ssd/ Share on other sites More sharing options...
Cyberdevs Posted September 2, 2021 Share Posted September 2, 2021 Hi and welcome, Boot with verbose mode and you can find out why it's not booting. Link to comment https://www.insanelymac.com/forum/topic/348748-can-no-longer-boot-after-adding-nvme-sk-hynix-gold-s31-ssd/#findComment-2765609 Share on other sites More sharing options...
etorix Posted September 2, 2021 Share Posted September 2, 2021 (edited) Not all NVMe controllers are supported. You may need to remove the S31, or hide it from OS X (same principle as for hiding an unsupported dGPU), to use OS X. Edited September 3, 2021 by etorix added missing "all" Link to comment https://www.insanelymac.com/forum/topic/348748-can-no-longer-boot-after-adding-nvme-sk-hynix-gold-s31-ssd/#findComment-2765623 Share on other sites More sharing options...
dreambig207 Posted September 3, 2021 Author Share Posted September 3, 2021 20 hours ago, Cyberdevs said: Hi and welcome, Boot with verbose mode and you can find out why it's not booting. Thank you! It's been so long since I've modified something I forgot about that. The error is: "AMF: No Slide values are usable! Falling back to 0 with 0x0B6C6000 bytes! does print work??" Very strange (to me at least lol) Does that provide any information on how to fix and allow the SSD to remain or should I hide it as @etorix mentioned? Link to comment https://www.insanelymac.com/forum/topic/348748-can-no-longer-boot-after-adding-nvme-sk-hynix-gold-s31-ssd/#findComment-2765648 Share on other sites More sharing options...
dreambig207 Posted September 3, 2021 Author Share Posted September 3, 2021 @etorix I've done some searching and most ways to hide the SSD seem to involve being able to boot I did find an example of someone changing the DSDT although that's way out of my understanding. Would that be the main way or have I missed another option? If that is, can you or someone help create the file or know what to change from the example below? Link to comment https://www.insanelymac.com/forum/topic/348748-can-no-longer-boot-after-adding-nvme-sk-hynix-gold-s31-ssd/#findComment-2765651 Share on other sites More sharing options...
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