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open core

  1. N

    MP 1,1-5,1 OCLP Bootpicker does not show OpenCore USB boot drive

    Hello, I'm running Open Core Lagacy Patcher on my old Mac Pro 4.1 with Sonoma. I have created a USB bootable install drive with OpenCore as a backup, but when I start the Mac the usb drive is not displayed in OpenCores boot picker, even if I press the spacebar. Does anyone know how to fix this...
    • nDanne
    • Thread
    • mac pro (early 2009) oclp open core open core boot picker open core legacy patcher usb boot drive usb booting
    • Replies: 7
    • Forum: Mac Pro
  2. pullman

    MP 1,1-5,1 cMP3,1 Monterey (OC) trouble falling asleep

    Hello everyone I am trying to figure out why my cMP3,1 won't sleep. I've successfully installed Monterey using OCLP and everything works great apart from sleep. When I select –Sleep video is cut, the screens go to power save and the HDDs are spun down. The white power button light starts to...
    • pullman
    • Thread
    • failure to sleep mac pro (2008) monterey oclp open core sleep problem
    • Replies: 5
    • Forum: Mac Pro
  3. Z

    MP 1,1-5,1 Losing My Mind Over Open core Boot Issue

    (Apologies if this is the wrong forum or thread, I'm new to this site) The past week, I've been attempting to get OS Monterey 12.7.3 on my Mac Pro 5, 1. It has been nothing short of a headache and it's at a point where I don't know what to do. The initial update worked fine enough, however it...
    • zyhter05
    • Thread
    • boot issues mac pro (2010) monterey open core
    • Replies: 3
    • Forum: Mac Pro
  4. S

    Latest Open Core Legacy Patcher update

    Hi, just updated OCLP on my iMac and was running Ventura fine. It won't log in after upgrading and reapplying root patches saying it needs to optimize. It just sits on the log in screen with an odd spinning circle underneath. So two thoughts - be careful upgrading the latest OCLP - any ideas...
    • Scuzzbozo
    • Thread
    • oclp open core open core legacy patcher
    • Replies: 1
    • Forum: macOS
  5. 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
  6. E

    Best way to reset a 2016 Macbook 12 running OpenCore + Sonoma

    Does someone have any suggestion about the best way to reset a sold Macbook retina 12" 2016 running Sonoma on OpenCore? Thanks
    • eduardokami
    • Thread
    • macbook retina 12 macos sonoma open core
    • Replies: 6
    • Forum: MacBook
  7. JudeTheObscurer

    iMac 12.2 27 inch open core and Sonoma

    I have two 2011 27 inch iMacs 16GB with AMD 6xxxx graphics card and have given them a new external ssd (€180), installed open core and did a fresh install of sonoma and it works fine, the boot is faster than it ever was ;-) Office 365 all apps work fine Adobe cloud Photoshop crashes but web...
  8. B

    MP 1,1-5,1 OpenCore/OCLP 0.68 & Ventura suddenly won't boot or reinstall on 2012 Mac Pro.

    For months, I've had a perfectly working system using current OCLP, Ventura and Catalina. The other day, I started up as normal in Ventura and it locked at the Apple Logo. I reset the NVRam from the OC boot picker. It still wouldn't boot Ventura. It also wouldn't even see the external USB I...
    • barkmonster
    • Thread
    • 2012 mac pro oclp open core ventura
    • Replies: 5
    • Forum: Mac Pro
  9. T

    Upgrading VRAM on 2012 21” iMac

    Hello, with open core can I use a pc bios on the 650m on my 2012 21” iMac and upgrade it to 2gb of vram from 512mb using a pc bios and use open core to get the boot screen back?
  10. ShockTroop

    2011 iMac OpenCore

    Looking for some feedback on the risks of using OpenCore. I have a 2011 iMac that I use for mostly a media hub (photos, music, movies, idevice syncing and backing up). I also use it to share my media library to my Apple TV. What if any issues should I be aware of? Is it even worth doing if...
  11. B

    MP 1,1-5,1 Best and safe way for install MultiBoot OS (TripleBoot: MacOS, Windows, Linux) on MacPro 4.1/5.1

    Hello. I have MacPro 4.1 2009. I flashed it to 5.1, then put Nvidia GT710 (because it have Metal), flashed to firmware to 144.0.0.0.0 and install MacOS 10.13 on NVME via 2$ aliexpress PCI-E NVME adapter. Next I want: buy RX 580 video card reinstall MacOS 10.13 on 12.3 wia OpenCore...
    • blrb
    • Thread
    • linux mp4.1-mp5.1 open core opencore legacy patcher virtual machine windows
    • Replies: 3
    • Forum: Mac Pro
  12. K

    Opencore Legacy can't bless USB installer

    Hi, trying to create a bootable USB installer via the OpenCore Legacy Patcher guide to get Big Sur running on my 2011 Imac. I followed the steps in the guide. As I have an non-flashed Nvidia GPU in the system I need to bless the EFI folder of OC as advised here. Completely stuck at this point as...
    • kurtiejjj
    • Thread
    • imac (24" oclp open core unsupported gpu
    • Replies: 4
    • Forum: iMac
  13. I

    Unsupported Catalina Install - but specific questions.

    My system: - MacPro 5,1 2 x2.66 6-core intel Xeon - 64 Gb ram - Radeon rx580 8gb - 4 SSDs in standard HD sled Bays - installed OpenCore… I did this because I was having computer issues last week…. trying to debug and test things I got to a point where I thought a boot picker...
    • iRabbit
    • Thread
    • 5 1 dosdude dosdude catalina patcher hackingtosh macpro macpro 5.1 mid 2010 open core opencore unsupported mac
    • Replies: 1
    • Forum: macOS Catalina (10.15)
  14. Rico Muerte

    MP 1,1-5,1 "Idiot's guide" to Open Core please?

    Just wondering if someone could point me towards a real simple "idiot's guide" (if such a thing exists?) to setting up Open Core? I have a 5,1 cMP on Mojave with an RX480 & I want to be able to dual boot into Windows. From what I've seen so far it doesnt seem "too" complicated, but I always...
    • Rico Muerte
    • Thread
    • cmp 2012 macpro 5.1 dual boot mojave open core rx480 windows
    • Replies: 3
    • Forum: Mac Pro
  15. SolidCake

    MP 1,1-5,1 Mac Pro 4,1 reboot loop after startup boot chime

    Hi all, My Mac Pro 4,1 (flashed to 5,1) enters a reboot loop when I start up the Mac. It keeps looping indefinitely until I manually turn it off by holding down the power button. When I turn it on again, or for the first time, it sometimes makes it past the boot screen and shuts down at the...
    • SolidCake
    • Thread
    • flashed to 5.1 help mac pro (2009) open core reboot loop startup issues
    • Replies: 16
    • Forum: Mac Pro
  16. AndreeOnline

    MP 1,1-5,1 Find GPU address in this format: gpu:47868fe1.a0aa77a0

    I'm trying to troubleshoot DaVinci Resolve not starting on 5.1 Mac Pro with Big Sur (Open Core). [My board info is 7.1 and I'm not using Lilu or whatevergreen currently. I had the same issued when I used them before, so running without is an effort to try all options.] It seemingly hangs in...
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