However, since that incident, Mojave has gotten increasingly sluggish to the point that now, even a click on the mouse results in a spinning color wheel. When I plugged it back in I had the "native" USB ports again. And since I am running OpenCore, Apple's AHT or the newer hardware tester did not seem to run or load properly (didn't work at all, even after option + d).Īs a last resort, I unplugged the cMP from the cord, at the machine, and left it that way for several minutes. I could still use the add-on PCI USB/Firewire card. ![]() The Windows drive is on the last drive, a 1 Tb Samsung EVO 850 SSD.Ī few days ago, I lost the USB ports front and rear that are connected directly to the motherboard. Catalina is on the next drive, a 1 Tb Samsung EVO 850 SSD. The Mojave OS is on the 2 Tb spinning hard drive. My CMP (4,1 updated to 5,1 with the necessary firmware updates) is running Open Core quite happily (or so it appears): Mojave, Catalina, and Windows 10 each on their own drive. ![]() Hopefully this explains as to why things didn't seem so simple, - Only this evening, and at my earliest opportunity, I was able to get my BootROM to - who generously gave me his time and assessment - and it turns out that my NVRAM may indeed be failing. Over the past few days, I eventually experimented with the external drive route for three reasons: (1) I was depending on my Big Sur reason for work reasons and was getting nowhere with the internal drive route, (2) my backup of my master drive is currently 150 miles away in it's cMP 5,1 twin and I needed my data ASAP, and (3) I was racing to get my dual-screen cMP working ASAP specifically to easily online book my 80-year-old father-in-law a COVID vaccine online yesterday - an impossible task yesterday with our state's faulty online booking system - something infinitely more difficult than scoring concert tickets. This is a vastly different situation than a potentially lazy newbie who doesn't read the procedures or the threads. This all should have gone like clockwork. Something seemed to be going wrong somewhere - and please forgive me for publicly asking everyone as to why - as maybe I missed something. That's what has stumped me so greatly - as I was genuinely trying to keep things just as simple as possible. After struggling for whatever reason back then, I finally got it to work and things ran just fine for months. In fact, I already did so with two different flavors of OC when Big Sur GM was released and did what you suggested above back then (actually Catalina the week before Big Sur was released, and then Big Sur GM). Thanks, - As an independent Mac consultant for over 25 years, one would hope and imagine that I did in fact do things to the letter and simply - particularly well before taking a chance on depending upon my cMP as a dependable Big Sur work Mac. (7) The OC's boot picker should show up and it should correctly boot into Big Sur 11.2.1? (Firmware should already be spoofed and no more messing with the VMM flag.) (4) Next, re-install MLo's OC 0.6.6 onto the SSD's EFI partition using Clover Config to mount the EFI drive. (3) Backup the ROM (thanks, tsialex) while I'm at it. It keeps shutting down if I put my non-OC drive in with Big Sur preinstalled on it.) I think this was part of my reason why to do this externally.or do this with a drive with OC on it so I could see what I was doing per the boot screen. (Stuck at this part.as I've got an unflashed RX580.have been doing this blindly. (1) Ensure that only one non-OC, bootable Mojave drive (which I have all set up) AND my SSD that now correctly has a functioning version of Big Sur 11.2.1 on it are in the cMP drive bays. ![]() (0) Reset cMP's NVRAM 3x (zapping PRAM 3x). I've since removed OC on it, to be safe and to start over. I originally figured it might be easier if I did things externally on my MacBook, but will keep it really simple and only use the cMP.Īgain, the Big Sur 11.2.1 SSD (with all my stuff on it) appears to boot just fine to my MacBook as an external drive, so I've got some hope. Okay - Let me revise the above procedure on my cMP to ensure I'll get it right this time (especially if it was a blessing problem).
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