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

p.kaczmarek2 14298 54
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  • #31 21385913
    p.kaczmarek2
    Moderator Smart Home  
    It depends on which step you are stuck on, you need to keep track of the steps you are doing yourself. It's hard to tell so remotely when you don't know what the other person has already done, but I had to manually enter boot after completing the copy to the flash drive:
    Instructions for installing OpenCore on a Mac using a USB drive and selecting a partition for booting. .
    What stage are you at now? Is the new Mac just on the flash drive, or is it already on the computer but not booting?
    Helpful post? Buy me a coffee.
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  • #32 21386051
    wetter1966
    Level 7  
    Good morning
    once the validation has finished and there is a rebot option, restart the process
    I follow the rules
    I press rebot and the option to restart pops up.
    after the reboot, when the screen is still black, I hold down the option and nothing
    it reverts back to the former system, i.e. big sur 11

    I have even removed the oclp
    and installed everything from scratch

    they will continue to match
    for mr coffee
    I also drink punishment
    and to work
  • #33 21386107
    p.kaczmarek2
    Moderator Smart Home  
    So there is a new mac loaded on the flash drive, but you can't get into that boot menu with the selection where you have to choose to boot from the flash drive?
    Helpful post? Buy me a coffee.
  • #34 21386110
    wetter1966
    Level 7  
    I am now in the creating stage




    but as you wrote I cannot enter the menu where to save the new os sequoia I am trying to continue I have sent you the video

    Added after 26 [minutes]:

    or maybe at the wrong moment I press
    Option???
    because I do it so that when it is
    restarted, the main screen disappears and I immediately hold option
    until it reappears
    but the old os appears
    big sur
    what is the reason for what I have to do
    can i just press and not hold and when exactly????

    Added after 3 [hours] 33 [minutes]: .

    the sequoia is probably on usb
    but I got to this main menu only there are 3 times oclp and there is no sequoia
    for the 5th time trying again from the beginning
    if you were here it would be great
    and you live far away in Germany????

    Added after 31 [minutes]:

    cofirmation is shown
    when i press yes it removes the USA
    when I press no it has no effect
    Computer screen with data deletion confirmation on USB.
  • #35 21386552
    p.kaczmarek2
    Moderator Smart Home  
    Unfortunately, I am not from Germany.
    This photo:
    OpenCore Legacy Patcher 2.2.0 program window with local disk selection. .
    It looks as if you want to upload the OpenCore Legacy patcher to the USB again, even though it only shows some 120GB media there - better not to move it, or you'll delete your files.

    If you have already uploaded the OpenCore Legacy Patcher to the USB stick, do not upload it again to the USB stick. You now need to switch off the computer completely with the USB stick plugged in at all times, then press Option on startup, or check here:
    https://support.apple.com/pl-pl/102603
    Screenshot from this page for your convenience:
    Screenshot of instructions for key combinations for Macs with Intel processors. .
    Here you have a more detailed description of this process of entering the boot disk selection:
    https://support.apple.com/pl-pl/guide/mac-help/mchlp1034/mac
    Instructions for a one-time change of the startup disk on a Mac with detailed steps for different models.


    PS: As you are doing this process for the first time, I'll remind you again - if you have any important documents on your computer, copy them somewhere to keep them safe, e.g. to a PERSONAL memory stick, to the cloud, to email, etc., before experimenting further.
    Helpful post? Buy me a coffee.
  • #36 21386571
    wetter1966
    Level 7  
    it didn't work I reached the menu, selected oclp then os sequoia and a circle with a diagonal line appeared and I wanted to select os sequoia, it didn't work
    the patcher kept asking big sur
    but if i have it on usb maybe it can be copied to imac or something because i'm so nervous already ....... no swearing allowed here i know
    oh jeez shock

    Added after 1 [hour] 36 [minutes]:

    why didn't you say that the new axle could be in FINDER
    Screen of macOS Sonoma installation on Macintosh HD. .
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  • #37 21388184
    maurycy123
    Conditionally unlocked  
    And the 2011 Mac mini has a new system ;-) I still need to invest in an SSD because, on the HDD it's a bit muddy. The installation itself took a few hours. But it works and that is the most important thing.
  • #38 21388187
    wetter1966
    Level 7  
    so last night I installed SEQUOIA 15.2
    BUT SOMETHING IS WRONG it delays opening the application
    on startup I have sequoia 2 times why

    Added after 5 [minutes]:

    there is an os installed on HD Mackintosh
    how to transfer this new os on SSD????
    this iMac has the new os sequoia 15.2

    27" Retina 5k,2014

    Added after 43 [minutes]:

    my imac Retina 5k 27 inch year 2014 has 2 HDD separated and SSD separated
    IS New system installed on HDD Macintosh but it muddles terribly
    SSD is fast how do I do it to combine both into one SSD so as not to delete the system help me gentlemen?????
    please clear pictures and instructions
    best regards Danusia
  • #39 21388934
    wetter1966
    Level 7  
    Hello
    how to download oclp applications and this Program
    Open core legacy patcher and from kad
    on os Yosemite 10
    on imac 27 inch,retina 5k,2014 please can someone give me the site
    but Safari does not work for me and neither does Google
    please help

    Danusia

    Added after 11 [hours] 37 [minutes]: .

    there is someone here??????
    please help
    I beg you
  • #40 21390796
    wetter1966
    Level 7  
    Hello, can anyone help me? I have
    such a Problem I have installed Yosemite 10.10.5 on imac 27" 2014 I have downloaded the OCLP application I have USB on and I can not download any new system
    installation progress
    downloading mac OK 15.2 goes to the end, nothing else will work
    I will send a picture of help Gentlemen, why maybe on Yosemite can not???
    but Wien that it can
    Safari does not work
    iMac screen with Yosemite 10.10.5 showing OpenCore Legacy Patcher 0.2.2.0 window.
  • #41 21399699
    wetter1966
    Level 7  
    i can't install sequoia on imac 27 2014
    I have downloaded OCLP apps too And nothing is on the USB and now on the iMac the Progress line is stagnant what should I do can anyone help me step by step????
    gentlemen know how to beg
    Danusia

    Added after 16 [minutes]:

    there's someone out there?????

    Added after 7 [minutes]:

    when it gets almost to the end of the sequoia installation it stops at the "quotes" stage
    19 minutes left and it stands like this for a couple of hours
    I have a USB with sequoia uploaded by Oclp all the time and I can not fully install on imac 27 inch Regina 5k 2014 help me please
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  • #42 21432571
    wetter1966
    Level 7  
    part i have such a problem i want to download sequoia
    on an IMac 27 inch,year 2014
    Currently I have os Big Sur installed,but after downloading OCLP and connecting the Pen Driver I reached the option Creating Installer mac os Sequoia,which displays me "Validating Installer Integrity
    Unfortunately this process has been going on for 6 hours now and I always get an error at the end!
    Why what should I do????can someone help me?????
    kind regards
    Danuta
  • #43 21538115
    kupiecpl
    Level 11  
    I have a Macbook Pro 15 inch from late 2013. I wanted to upgrade the system from Big Sur 11 to Monterrey 12. (I only have a 16 GB flash drive).
    I did everything as you described but in the end I can't write the boot data to the hard drive. After rebooting and pressing option only the hard drive is shown and not the efi partition. I have to reboot the Macbook each time with the pendrive inserted. Please help.
  • #44 21547543
    kupiecpl
    Level 11  
    >>21538115 >>21538115 Problem solved, I installed Clover Configurator which allows you to mount EFI partitions and then edit them with Finder. From the ssd disk0s1 partition I deleted all directories (with files) and from the usb disk0s2 partition I copied everything, i.e. the EFI directory and the SYSTEM directory to the disk0s1 partition. I then ejected the flash drive and rebooted + Alt. The boot to ssd showed up and everything works without the pendrive.
    EFI partitions can also be mounted from a terminal but then they are read only, nothing can be written.
  • #45 21551351
    wetter1966
    Level 7  
    When installing the open core legacy patcher it says restart but what man press Which key on imac 27 zool Retina 5k
  • #47 21552394
    wetter1966
    Level 7  
    Error message during macOS Ventura installation using OpenCore Legacy Patcher on a colorful background. Good morning
    Please help
    I can not download os Ventura on imac 27 inch 2014

    Man installed oclp
    Pen drive 120 GB
    I keep getting a message in English

    Error message on a computer screen during an attempt to create a macOS installer using OpenCore Legacy Patcher.

    What should I do please tell me step by step or I will call you ONLY I do not know YOUR NUMBER

    Danusia
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  • #48 21552477
    kupiecpl
    Level 11  
    If I were you, I wouldn't use that 120GB usb but some new, smaller one. Ventura will probably fit on a 16GB usb. Format this usb to FAT and then start the installation again.
  • #49 21554167
    dana1111
    Level 1  
    I downloaded it and the Amiga is running smoothly.
    But why Sequoia freaks out after installation
    Doesn't work
  • #50 21636942
    tomaszgutowski79
    Level 1  
    Hi, I'm new here so welcome everyone. I'm a new MacBook owner, which I bought with my daughter in mind (internet, school, netfilx, etc). I got a MacBook that was already old but in very good condition, so I decided to buy it, but I was acting a bit foggy so the aftermath is this post :) .

    I decided on a MacBook Air (13-inch, Mid 2013) and everything was ok until it turned out that it no longer supported most apps i.e. WhatsApp, Chromium, FB and you have to do it all via Safari. I poked around a bit and found that there is such a thing as OpenCore Patcher so I breathed a sigh of relief when I saw that it was .... so simple :)

    Well simple it was until I downloaded what I thought was the right file .... I chose the most up-to-date one, macOS Sequoia. And that was it, because it turned out that my Mac doesn't support it and that it's not ... so easy :( That you have to download the right file for my model, etc. etc. etc. And everything turned out to be impossible for me (plus my ... English).

    I have a question for you: Is it really possible to "tweak" my MacBook Air (13-inch, Mid 2013) to the point where I can freely install such applications and not only do it via Safari? If so, can one of you tell me what file I need to download to make it work on my computer?

    Thank you very much for your help, if this is not the right topic for the Forum then I apologise. Have a good weekend.
  • #51 21636957
    kupiecpl
    Level 11  
    I too have a 2013 Macbook and didn't throw myself at Sequoia but installed the lowest still supported system which is 12 Monterrey. Everything works as I described in the posts above.
  • #52 21641318
    tomik67
    Level 12  
    I also installed Monterrey without risking to jump straight to the latest release, now I have an update suggestion every now and then.
    Is it now possible to update the system automatically or in this case only via the OpenCore Legacy Patcher ?.
  • #53 21641415
    kupiecpl
    Level 11  
    I too get offers of upgrades but they are not Monterrey upgrades just a switch to Sequoia. I ignore them all. I upgraded my system from Big Sur to Monterrey because the antivirus from Play that I get with my cable does not support systems below 12.
    If that antivirus changes again I will upgrade to 13.
  • #54 21641465
    Damian_Max
    Level 20  
    kupiecpl wrote:
    I also get upgrade suggestions but they are not Monterrey upgrades only upgrades to Sequoia.
    .
    Updates for Monterrey (without upgrading to Sequoia), you probably have under some three dots.

    tomik67 wrote:
    It is now possible to update the system automatically or in this case only via OpenCore Legacy Patcher ?.
    .
    Hm... in the FAQ https://dortania.github.io/OpenCore-Legacy-Patcher/FAQ.html#can-i-use-ota-updates
    says you can:
    Quote:
    Can I use OTA updates? .
    You can. However it is extremely recommended to use USB drive for major OS upgrades (such as 13 -> 14) to avoid larger issues from potentially occurring.
    General updates are usually fine, though it is always a good idea to wait a few days to see whether patches break and have to be fixed.

    (where OTA = Short for O ver T he A ir, refers to native OS updates via System Preferences like a supported Mac)

    Although it's worth updating the OpenCore Legacy Patcher beforehand, and somewhere I think it was written that after a system update it's worth clicking something there too.
  • #55 21642064
    tomik67
    Level 12  
    In that case, it's safer to go with USB though, and as always with such big changes I make a Clonezilla image of the drive just in case something goes wrong.
    Link
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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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