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opencore

  1. Macschrauber

    High Sierra booting possibly corrupts newer Systems. Fix, description and a boot picker renamer

    Summary: We discovered a serious bug: booting High Sierra without System Integrity Protection (csrutil disable) possibly corrupts another mounted (unsupported) APFS2* OS Preboot volume, even when on another drive. Consequently, the corrupted OS may appear as High Sierra and check for...
    • Macschrauber
    • Thread
    • high sierra opencore opencorelegacypatcher unsupported os
    • Replies: 53
    • Forum: macOS
  2. A

    MP 1,1-5,1 Mac Pro 3,1 Monterey OpenCore, Walkthrough, Install, Post-install Impressions

    A few impressions post-install of OpenCore Monterey on Mac Pro 3,1. Perhaps it could help someone else out if stumbling upon similar issues. My plan/wish was to fully move both my Mac Pro 3,1 to (at least) Monterey. One of them acts like a test-bed to be able to identify what works and what...
    • axius
    • Thread
    • mac pro 2008 macpro opencore opencore 1.4.0
    • Replies: 47
    • Forum: Mac Pro
  3. ZNDK

    MP 1,1-5,1 OCLP can't boot Mac in recovery mode

    I cannot get macOS to boot in recovery mode with OpenCore Legacy Patcher(1.2.0,1.2.1,1.3.0). I usually use OCLP to use Ventura, but when I installed Monterey to try it out, even Monterey could not boot in recovery mode with OCLP. I can boot in recovery mode with OpenCore, which I configured...
    • ZNDK
    • Thread
    • opencore opencore legacy patcher
    • Replies: 9
    • Forum: Mac Pro
  4. S

    MP 1,1-5,1 Mac Pro 5,1 - Titan Ridge Thunderbolt Questions

    Hi, I have a Mac Pro 5,1 with a Titan Ridge 2.0. Trying to get Thunderbolt to work but I'm new to this. Can anyone help with a step by step? Here's what I have and know: Mac Pro 5,1 running Catalina. 32Gb Ram, RX580 Graphics and a Titan Ridge 2.0. - The TR has a jumper between pins 3 and 5...
    • smrieck511
    • Thread
    • gc titan ridge open core opencore titan ridge
    • Replies: 3
    • Forum: Mac Pro
  5. B

    Open Core Legacy Patcher boot screen & ghost drives

    I have 2 ghost drives that only show up in the Open Core option-boot screen, and I want to repair whatever is causing them. If I select them to boot, one loops back to the same screen almost immediately, and the other loops back as soon as you let go of the option key. The two with weird names...
  6. B

    Installed OCLP 1.2.1 on my MBP 13' 2015 w/Sonoma, but now it's stuck in a boot loop.

    Installed OCLP 1.2.1 on my Mac, but now it's stuck in a boot loop. Tried resetting PRAM and creating a new Open Core build on a USB, but no luck. Don't want to use internet recovery and can't make a macOS installer due to limited USB space. Need help without wiping the system. Any ideas? Upon...
  7. N

    MP 1,1-5,1 El Capitan and Ventura via OpenCore on same SSD in MacPro 4.1

    Hello everyone. I have an old MacPro 4.1 that I upgraded with an OWC Accelsior S Card and an attached Samsung 1TB SSD. I installed El Capitan on this SSD and it works fine. Now I would like to install Ventura via OpenCore Legacy Patcher on the same SSD while keeping the El Capitan installation...
    • nDanne
    • Thread
    • el capitan opencore opencore legacy patcer partition ssd ssd ssd adapter ventura
    • Replies: 2
    • Forum: Mac Pro
  8. A

    [Solved] Boot Logo issues with OpenCore Legacy Patcher on MacBookPro11,4 (mid-2015 15")

    Hi guys, Not sure whether this is an OpenCore issue or OpenCore Legacy Patcher issue, but I'm thinking it could probably be an OC issue. So I'm running Sonoma 14.1 on a MacBookPro11,4 with OCLP. Problem: the boot logo (Apple logo) is displayed BEFORE the boot picker, and not displayed when it...
    • arsradu
    • Thread
    • missing opencore opencore legacy patcher
    • Replies: 3
    • Forum: macOS Sonoma (14)
  9. G

    MP 1,1-5,1 Opencore Legacy Patcher with NVMe Mojave and SSD Sonoma

    Hi - Relative newby to Opencore Legacy Patcher, so maybe some obvious questions, but I am stuck! I have a Mac Pro 5,1 that has been running Mojave for years fine, with the MacVidCards bluetooth/wifi mod and a non-flashed RX560. Finally fed up with no updates and software stopping working, so...
    • Guymartin
    • Thread
    • boot picker mojava nvme opencore sonoma
    • Replies: 0
    • Forum: Mac Pro
  10. B S Magnet

    Other ActionRetro does the noble work of promoting the power of OCLP by running Sonoma on an A1260/MBP4,1

    [This post was supposed to go up several days ago.] I’m sure a few of you have already seen the latest by Action Retro: a side-by-side of OCLP running Sonoma on an A1260 (running half of its maximum RAM, and unclear if it was running a spinner or SSD), next to an M1 Max MacBook Pro with 64GB...
  11. U

    Can I remove Open Core?

    I've been trying out newer OSs on different machines using my High Sierra daily driver as the machine to build the install disks. Somehow I managed to install opencore for my MacBook Air on the boot disk on my daily driver iMac 2011. Doesn't impact the system running but does complain that I...
  12. U

    OpenCore install on existing partition?

    I have a disk with multiple partitions on it with both Big Sur and Monterey install that I've been using to test out different installs on different hardware. Is there a way to use OpenCore patcher on those disks without having the tool erase all of the partitions on the disk? (e.g. have it...
  13. T

    MP 1,1-5,1 Corrupted opencore on cMP5.1 ?

    Hei! I purchased a used cMP5.1 (2010) with Vega64, OpenCore and BigSur on it. Both OC and BS are installed on an NVMe drive (currently the sole storage on it). It is booting and running fine. I installed the latest Hackintool and found that it autodetects Clover but shows version 0 and when I...
    • tek.prabu
    • Thread
    • 2010 mac pro big sur clover cmp5.1 corrupt nvme opencore sata vega 64
    • Replies: 19
    • Forum: Mac Pro
  14. A

    Opencore legacy issue on 15" 2011 A1286 - Chinese battery issue!

    HI all, Hoping someone can help with this issue that has had me puzzled for over a year now, I have upgraded dozens and dozens of these 2011 - A1286 macs What I do.. 1, Disable onboard AMD graphics chip 2. Upgrade ram to 8gb 3. Upgrade HD to SSD 4. Install latest OS with Opencore. The problem...
    • atosoup
    • Thread
    • a1286 chinese battery opencore opencore legacy patcer
    • Replies: 2
    • Forum: macOS
  15. flaubert

    MP 1,1-5,1 Audio recording problem: intermittent repeated sound fragments

    Hi, one of my main uses for my Mac Pro is preparing radio shows, which involves voice announcing between tracks. I've noticed that I occasionally have a defect in my voice recordings: when I play it back I'll sometimes find a place in the recording where a fragment of sound repeats and replaces...
    • flaubert
    • Thread
    • audio recording mac pro (2010) opencore openzfs
    • Replies: 0
    • Forum: Mac Pro
  16. Black Ninja Original

    MP 1,1-5,1 MacPro 5.1, Opencore and best macOS 2023 for audio

    Hi! I have a MacPro 5.1, macOS Mojave, 96GB RAM, Kyrom.2 aquacomputer with Samsung 970 EVO SSD, Allegro Pro USB3.2 PCI Card and NVIDIA Quadro K5000 for Mac. I work with music production in Logic Pro and use tons of plugins (Waves, Izotope, Fabfilter, Native Instruments, IK Multimedia and...
  17. Q

    Updated MBP2011 opencore legacy patcher and stuck in recovery mode

    i updated my patched MBP 2011 on ventura to the latest OC (version 0.6.8) and now my back does not boot up it keeps going into recovery mode. i tried to reset NVRAM but got not luck. can anyone tell me maybe i can revert OC changes to default through Terminal app which i can open in Recovery...
  18. 5

    Mac Pro 5,1 with Opencore, Windows 11 installer couldn’t create a new partition or locate an existing one

    I’m trying to get Windows 11 installed on my cMP running Monterey with Martin Lo’s OC and I’m stuck with an error saying ”Windows 11 installer couldn’t create a new partition or locate an existing one” when I’m choosing the drive to install to. I’ve tried formatting the drive but it won’t fix...
  19. I

    macOS Ventura 13.4.1 fail with OCLP

    I recently bought an iMac Late 2013 that supports up to Catalina, but with OCLP I updated it to Ventura 13.4.1, the system was installed and the patches well but then I turned it off and when I turned it back on the system load well but when the screen of the choose user when I chose a user the...
    • iLiztech X
    • Thread
    • imac imac (21.5" late 2013) opencore opencore 0.6.7 screen black ventura ventura 13.4.1
    • Replies: 1
    • Forum: macOS Ventura (13)
  20. A

    Can't start up Mac from opencore boot menu

    Hello, first time posting here. I have a MacBook pro from a couple of years ago, the Mac got jailbroken and i accidentally tried updating the software to the newest version not knowing i wasn't supposed to do that. This caused it to stop working, everytime I try too start it the "OpenCore boot...
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