Hi all,
I'm trying to set up macOS Sequoia on a Mac Pro 5,1 using OpenCore Legacy Patcher (OCLP) and running into some roadblocks. Here's a quick summary:
Questions:
Any guidance or advice would be really appreciated — just want to get this Mac Pro running a modern macOS.
Thanks in advance!
I'm trying to set up macOS Sequoia on a Mac Pro 5,1 using OpenCore Legacy Patcher (OCLP) and running into some roadblocks. Here's a quick summary:
- âś… OCLP experience: Successfully used it before on a MacBook Pro 9,1.
- 🎥 Watched various guides (e.g., Mac Sound Solutions), and I believe I understand the process.
- đź’ż Currently running macOS High Sierra, fully updated.
- 🔧 Boot ROM version is 138.0.0.0.0 — I’ve been unable to update it to 144.0.0.0.0, even though I can boot from a Mojave installer USB.
- 🎮 I have two GPUs:
- HD 5870
- RX 580 from Soyo (AliExpress) — unsure if it supports Metal.
- đź§Ş Tried installing Mojave with both GPUs (slots 1 and 2, RX 580 connected to external PSU), but no display output, even in the installer.
- đź’ˇ I read that Mojave might be needed first for firmware update/Metal compatibility?
- 💾 Also tried booting Sequoia OCLP USB — no success.
- 🔌 NVMe note: Using ASUS Hyper M.2 x16 card v2 — it shows up in Disk Utility under High Sierra.
Questions:
- Does the RX 580 (Soyo, AliExpress) lack Metal support or EFI ROM compatibility?
- Is the firmware version blocking my ability to use OCLP + Sequoia?
- Would using a Sapphire RX 580 Nitro+ 8Gb with known Metal support help resolve this?
Any guidance or advice would be really appreciated — just want to get this Mac Pro running a modern macOS.
Thanks in advance!
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