Stuck on prohibited sign

silvergraphs

Member
AMD OS X Member
May 3, 2020
51
9
8
Hi there, I'm trying to install Tahoe 26 to another hard disk I've with my USB stick but it fails, i'm stuck on the prohibited sign

WhatsApp Image 2026-03-10 at 22.21.22.jpeg

WhatsApp Image 2026-03-10 at 22.21.26.jpeg

At the beginning i receive the prohibited sign instantly at picking at OC, switched from iMacPro1,1 to MacPro7,1 and that was solved (and also changed the serial numbers) but now i've that issue with the prohibited sign after the verbose logs

I've created the USBMap.kext with the utility on Windows but not worked

Any ideas?

My setup:

Gigabyte B550 AORUS ELITE AX V2

AMD Ryzen 7 5700X - Thermaltake Contac Silent 12

16GB RAM XPG Hunter DDR4 @ 3200 MHz

Sapphire Nitro+ RX 6700 XT 12G

WD Blue SN580 1TB NVMe

XPG S40G Spectrix 256GB NVMe

Corsair Carbide 100R

Windows 11 & macOS Sequoia (OpenCore 1.0.6)

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My EFI folder is attached

Thanks
 

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