Booting into the prohibited symbol

momchilh

New member
AMD OS X Member
Mar 29, 2026
14
1
3
CPU:
AMD Ryzen 5 7500F
ive been trying to boot for a few months now, almost every configuration i make ends up like that. can anybody please help out?
 

Attachments

See if this EFI-v3 fixes the KP when OC hands over control to the installer.
 

Attachments

Hey, new things happen again. The bootloader is fast again, i even have OpenCore set as my first boot option when i checked in my BIOS. Thanks for whatever you did! This time i was greeted with "The operation could not be completed. (com.apple.diskmanagement.disenter error -119930877.)", even quicker, i mean after the first restart. Right now im reading that this is a problem with macOS recognising your drive. Ill restart the whole installation. By the way, earlier you said i havent mapped my USBs correctly, why is that?
Edit: After a few tries i got to the same situation - apple screen, progress moving from 29 to 27 minutes and then the installer popping up with "An error occurred while preparing the software update.".
Edit again: Ive booted quite a few times and after the installer restarts around 5 times every time it freezes in random places. In the beginning it was freezing at the apple logo, now i cant even get past the verbose logs. For example the system straight up freezes in the middle of printing a path or i get no display output.
 
Last edited:
Which drive are you aiming to use as your macOS drive? Not the old Seagate 500gb drive you took from the MacMini I hope.

Did you recreate your macOS installation drive?

Might be sensible eremove any drive you are not planning to use for macOS, I.e. Windows, Linux or Data Storage drives. So you only have the macOS installation drive and the drive you plan to install macOS Tahoe on.
 
I want to use the 1TB Silicon Power SSD. An HDD wont do much today, i just have it for extra storage. Last time i recreated the whole installer drive was when i started using one for 26.3, which is precisely when i sent my last bootable EFI configuration. Is it reallynecessary to remove the other drives? The HDD is easy, the problem is the other drive is an NVMe, so that means i cannot use my pc at all and ill have to tear it apart just to take the drive out
 
A Silicon Power SSD isn’t the best option for the macOS drive. They are cheap for a reason. Personally I would never recommend Silicon Power drives to anyone.

I have found these Silicon Power drives to be flakey and prone to issues when used as anything other than a Windows drive. Tried using a 1 TB SSD in a PS4 and another as the macOS drive in a Mini PC Hack. Neither lasted long before issues arose. The drive in the PS4 died completely. The macOS drive was swapped to another PC and used for a Windows 11 install, before more serious issues occurred or it died.

There are better options for a new macOS drive, probably cost more than the Silicon Power SSD, but isn’t that the case for most compatible macOS components. Some Samsung SSD’s are fine as macOS drives, but by far and away the best choice is a Western Digital or a SanDisk drive (SSD or NVME), as the controller used in those drives are fully compatible with macOS. Can’t say the same for the latest Gen 5 NVME drives, as they use an incompatible controller.

Using any drive that incorporates a Phison controller as an macOS drives is asking for trouble.
 
Okay, ive always known SP drives arent really a reliable label, but i didnt know why. Thanks for the info, its good to know. So you are speculating this is the only issue now?
 
  AdBlock Detected
Sure, ad-blocking software does a great job at blocking ads, but it also blocks some useful and important features of our website. For the best possible site experience please take a moment to disable your AdBlocker.