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Thanks. I will try again keeping your suggestions in mind. When I boot I can see a ClearNvram option on the screen but not a ResetSystem option. I will set the SecureBootModel to disabled. And remove the Itlwm.kext. I do have a NVMe adapter arriving today so I should in theory be able to gain...

Up until a few days ago, I was running BigSur just fine. I then tried to update to Monterey and it all went wrong. However, I was not too concerned as I had a hard drive with Catalina that I could boot to. Only it wouldn't boot! I am not sure why. It has always booted before. I do now have a...

Well I messed up. I thought I had it right but now I can't boot into BigSur or anything else! I did backup my EFI before updating OC etc and I "thought" that I would be ok if it all went wrong because I still have another drive with Catalina on it, only that won't boot either! I loaded up...

Yes the drives are formatted as Mac OS Extended (Journaled) with GUID partition map. I tried again with a Monterey USB install. Not what I was after but I thought I would try it. But again on selecting the USB from the boot menu it just flashed a black screen and return to the menu. Odd...

Just a quick update on this. I decided to try a boot USB for Ubuntu Studio and that worked fine. I am writing from Ubuntu now. So it is not that my machine cannot boot from USB. It is obviously something amiss with the files on the drive when trying to boot a version of macOS. I am just not sure...

I recently had a need to run some older 32 bit apps and as I am using BigSur I can't do this. So someone suggested I use Parallels to install Mojave or High Sierra. The only problem is, they don't work. Virtualbox won't recognise my USB. Or rather it sees that I have a USB but it won't boot...

Thanks for all your help with this. It is really appreciated. Unfortunately, the USB is still being ignored. I am sure it must be something simple that I am missing. I am wondering if this has any connection to what happened to my Windows 10 drive. Normally I have two drives, one for macOS and...

I haven't checked but bear in mind I am running BigSur at the moment. Same computer. So it "should" boot from USB just fine. However, I just tried the same USB drives on my wife's PC. Chose it as the boot drive and it did exactly the same thing, just ignored them and went straight into Windows...

Yes, tried front and back. I just can't figure out why the machine is suddenly not even attempting to boot from USB. I even tried a plain old Mac OS install USB, without anything added and it was exactly the same result. It is not the USB drives. They all work fine. It is not the formatting...

There is something very odd going on here. My machine will not boot from any USB device. I have tried three USB drives now. What happens is I restart, and press F12 to bring up the boot selection screen. I select the USB drive. The screen goes black for a split second and then returns me to...

I tried another USB drive but still the same, refuses to boot from it. I must admit I am a bit lost with this now :( A real mac pro is looking like a more enticing if expensive proposition by the minute 😂

I was originally going to try Mojave but I had the same issue with not being able to boot from the USB drive. I will try another drive tomorrow, jut to be sure that this is not where the problem is.

Thanks for all your help with this. That was amazing of you to go to all this trouble! I tried to boot with the EFI you uploaded but the USB won't even boot. I don't think this is a result of any edits you have done. I realised that when I said it was booking to a black screen with the Apple...

Ok, so I am running BigSur without much in the way of problems however I need to use some apps that are 32bit only. As far as I know, the only way I can do this is to set up an earlier install of OS X. I will be installing to a fresh drive so no need for any dual boot stuff. My motherboard...

Thanks. I am in the UK. I also run Win10 on the same machine (different boot drives) and that is where I do all my gaming. So anything that works ok in Big Sur and will also benefit me in Win10 will be a plus :)

I have Big Sur running fine on a Gigabyte B450 I AORUS PRO WIFI and I am currently using an XFX 7850 2GB graphics card. It's fine but I could do with something a little more up to date. I am a bit out of touch with the whole Hackintosh/Graphics Card thing but I know there are probably just a...

Thanks but I have done that more times than I care to remember. It simply never works :(

Yes, but it wants to activate iCloud. I can't ever get that to work. I put in my Apple id and pass, it sits there for a while and then says it cannot connect to the server. I have tried changing serial numbers etc so many times but it never works.

I currently have three hard drives installed in my machine. The main drive with BigSur, a second drive (240GB) which is a clone of my main drive and one with Catalina on. When I boot my machine I get a black screen with a choice of drives. However, it sits there for around 20 seconds, during...

Thanks, that worked fine :)