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How do I install the latest macOS on an old computer, laptop? OpenCore Legacy Patcher

p.kaczmarek2 16095 62
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  • #61 21702383
    tomik67
    Level 12  
    >>21650486 .
    I managed to get the situation under control thanks to advice from Discord.
    I booted the MacBook in emergency mode while holding down the Shift key. Booting was successful but at such a resolution that I almost needed a magnifying glass to see the letters.
    I then followed the advice in this post where there is also an explanation of the reason for the boot stopping...:

    Link .

    Indeed, after this procedure I was able to boot normally but the screen brightness control and keyboard backlight did not work, a root patch was required.
    I wanted to re-patch root but the system screamed that there were some updates in readiness for installation, indeed there were. You should absolutely disable automatic system updates.
    Then again advice from Discord helped to deactivate updates and free up the ability to patch root...:

    Link .

    and specifically the use of the purgePendingUpdate tool described in this thread...:

    Link .

    Then root and everything works as it should again.
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  • #62 21703067
    Damian_Max
    Level 20  
    @tomik67 Wow, well that's elegant(!), thanks for sharing how to solve the problem. Often there are tutorials on the net where a path is implemented where everything works out; and locally there are some errors and there is a big problem.
    So in the end you have upgraded to the latest system?
    If you were to do it again, how would you do it now?
  • #63 21710042
    tomik67
    Level 12  
    I don't have the latest system (Sequoia) just an updated Monterey, and it was this automatic update that removed root.
    The problems I have described apply to MacBooks with Metal graphics, which in my case is an nVidia GeForce GT 750M.
    As of today I don't want further updates, Monterey works fine, I'll wait for further OCPL development.
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Topic summary

The discussion centers on installing the latest macOS versions (Ventura, Sonoma, Sequoia) on older Apple hardware using OpenCore Legacy Patcher (OCLP). Users seek guidance on upgrading Macs that no longer receive official updates, particularly models like the 2014 iMac 27" Retina 5K and Mac Mini A1347 EMC 2840 2014. The process typically requires a USB flash drive (recommended minimum 32GB, though smaller sizes like 16GB may suffice for Ventura) to create a bootable installer. Challenges include hardware compatibility issues such as non-functional built-in keyboards and trackpads during installation, requiring external USB input devices initially, and post-installation problems like Wi-Fi connectivity, AirDrop failures, and slower performance due to lack of hardware acceleration or driver support. Users report difficulties entering the boot menu (holding Option key at startup) to select the USB installer, and some experience installation stalls or errors during validation or copying stages. Solutions involve preparing the USB installer on the same or another Mac, ensuring correct EFI partition setup (sometimes using Clover Configurator to mount and copy EFI files), and following detailed step-by-step instructions from OCLP documentation or community guides. Some users inquire about installing without USB, but the consensus is that USB media is necessary for the process. Upgrading RAM to at least 8GB is recommended for smoother operation post-upgrade. The patcher supports Intel-based Macs, despite Apple's transition to Apple Silicon (M1/M3). SSD upgrades prior to macOS installation improve performance. The community emphasizes backing up data before proceeding and patience during long installation phases. Overall, OCLP enables extending the usable life of older Macs by installing unsupported macOS versions, albeit with some manual troubleshooting and hardware limitations.
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