If the macOS that you want isn't compatible with your Mac or the currently installed macOS, the installer will let you know, and the App Store might prevent you from downloading it. For example, it might dim the Get button, say that the macOS is not compatible with this device, or say that the requested version of macOS is not available.
I have downloaded the El Capitan DMG file (InstallMacOSX.dmg) provided by Apple. The expanded DMG image contains the package "InstallMacOSX.pkg" which should be run to create the El Capitan installer but fails with the following message: This version of OS X 10.11 cannot be installed on this computer. (from the OS X Installer) That happens presumably because, quite reasonably, it would not make sense to install on top of a later version of the OS. However, in this case, I want to create a boot USB drive for an installation on another Mac.
Download El Capitan Installer On Unsupported Mac
I have noticed that these instructions no longer work as expected when using the current InstallMacOSX.dmg file, which can be downloaded from either the Apple website "How to download macOS" or the Apple website "How to create a bootable installer for macOS". These instructions may work as expected, if you are using an older saved version of this file. At best, these instructions are just a hack and Apple has every right to change the InstallMacOSX.dmg file to prevent the desired results.
DosDude Catalina Patcher is a popular third-party tool that allows users to patch the MacOS Catalina installer on otherwise unsupported Macs. Of course, just because you can do this, doesn't mean you should, as there's a good chance that performance will be sub-optimal, while Catalina features may depend on modern Mac hardware (Sidecar, for example) and likely won't work at all.
To start we'll want to grab ourselves a copy of macOS. You can skip this and head to formatting the USB if you're just making a bootable OpenCore stick and not an installer. For everyone else, you can either download macOS from the App Store or with Munki's script.
From a macOS machine that meets the requirements of the OS version you want to install, go directly to the App Store and download the desired OS release and continue to Setting up the installer.
From here, jump to Setting up the installer to finish your work. If you want to check the integrity of your download, you can check this repository of checksums (opens new window), although do note that these are crowdsourced checksums and may not be a reliable way to check for authenticity.
Speaking of Terminal, Armin Briegel has written on his Scripting OS X blog that the softwareupdate command has a new option in Catalina that lets you download the full installer for a specific version of macOS. This seems to work with versions of 10.14 Mojave and 10.13 High Sierra, but nothing older.
Is there a way to see when the signing certificates expire? I thought I knew how, but when I use that procedure it shows the Mojave and Catalina installers I just downloaded expiring in April of 2021 (which is better than last Thursday, but still only 1.5 years away.)
When I try to get the High Sierra or Mojave installers, the link takes me to a page where the link only takes me to the app store where those installers do not appear anywhere that I can see. The links for El Capitan, Sierra, and Yosemite got me to a page where I could download a dmg so those seem to work.
The day the TidBITS article appeared I tried downloading the installers and had problems downloading the ones from the Mac App Store. I reported the screwup of the missing archived macOS installers to a senior AppleCare advisor. Sure enough, he, too could not download them from the Mac App Store. He agreed it was screwed up and reported it to engineering.
I got them all to download, except High Sierra. On the app store page for HS I got an Open button, even though I had unmounted my archive volume that contained the HS installer. So I used the macOS High Sierra Patcher tool as you directed, getting the installer download instruction from the Tools menu. Great app. High Sierra was them downloaded to my specified location. So now I have updated apps for all the macOS X installers in your list. However, this was the only one, besides Mojave, that downloaded the app. The other links downloaded dmg copies, which do not contain the usual installer app. So I retained the apps for Mojave, El Capitan and Yosemite.
That just indicates that you still have an older copy of the installer squirreled away somewhere on your boot drive. The App Store is very good at knowing this, so you might want to spend a bit of time trying to locate and trash it. That may well be why the one you downloaded was then moved to trash.
Apple has no advice on how to do this, nor have I seen any here or elsewhere. Pre-Sierra systems cannot be re-downloaded from the App Store with the new certificate. (But I got a full installer.) Maybe you managed to create a bootable installer yourself from the new El Capitan?
Anyone having luck with downloading the full 6GB Mojave installer from the App Store? On one machine I only get a 22MB stub installer. On another machine I was able to download the full 6GB version but the installer app reports to be damaged. I re-downloaded it a few more times with the same results.
I had exactly the same thing happen to me despite downloading a brand new Mojave installer. Then I realized, the problem is launching the installer off an external HDD. As soon as I moved it back onto my internal boot SSD, it launched just fine.
Whatever the issue was, we need to download the install files with theinstaller. Open the installer and let it run until the download finishes. Ifthe app asks you to reboot, quit it at this point. If it never asks, you canstill find a way to get files out (after a failed install, they should not beremoved).
The App Store can be found under the Apple menu.
Upon launching the App Store, launch El Capitan.
The installer will automatically open once the download is complete.
The Apple menu can be found by selecting the App Store button and installing updates.
hi Hoakley. I have two questions. If you download an OS from apple servers provided on this link -us/HT211683, will those also expire on Sept. 30, 2021? If you change the date through terminal command before running the OS installer, will that be enough for the certificate to still work? Thank you
11) Plug the USB installer we just created into the unsupported machine. Turn on the unsupported machine whilst holding down the alt/option key. This makes the machine search for other drives to boot from, in this case, our USB drive.
To fix issue this with unsupported WiFi-Adapter, you have to install the Legacy Patch to get WIFI running again. If you just download ed the online version of OCLP (32MB), you are not able to perform the patch, because it demands an existing Internet connection.
At the very least, we recommend downloading the Mojave installer. That will likely come in handy for a variety of people, from users reliant on 32-bit apps to users of older Macs who want to update but avoid macOS Catalina.
Download and re-install Apple Java 6- After you upgraded your Apple Mac OSX from a previous release to 10.10, Apple Java 6 may no longer exists on your upgraded system. If you then launch Statistics 22 which is an application that relies on Java 6, it can happen, the Mac OS pops up a dialog box stating Java 6 was requested, but none is present.- The Java dialog has a "More Info" button, which when clicked opens a browser to an Apple Tech Support page for Apple Java 2014-001. A download link is provided: - Click on the download link and a DMG containing the Java 6 installer is downloaded.- Then you open the Java DMG, double click on the Java installer, follow the prompts and complete the installation of Java 6.*******
I have an iMac running El Capitan, purchased in 2013, and was having the same problem... Apple's Mac store said my OS X was up to date. So, I went to this page, -us/HT211683, and clicked on the link (using Safari) at the bottom of the page to download the macOS High Sierra 10.13 installer. Once I installed the new OS X, which took about an hor, problem solved. I am back to being able to access any website with any browser.
Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.
Click a version below to view the download options:10.1.19.5.29.3.49.2.79.1.69.0.98.5.58.4.78.3.68.2.58.1.18.0.97.4.107.3.157.2.67.1.47.0.96.4.86.3.296.2.66.1.76.0.75.6.4 Version 10.1.1 Windows (32-bit) (with installer)Download Windows (64-bit) (with installer)Download Windows (32-bit) (no installer)Download Windows (64-bit) (no installer)Download macOS (Intel Processors)13 Ventura12 Monterey11 Big Sur10.15 Catalina, 10.14 (Mojave) and newerDownload macOS (Apple Silicon Processors)13 Ventura12 Monterey11 Big Sur and newerDownload Mac OS X / macOS10.14 (Mojave)10.13 (macOS High Sierra)10.12 (macOS Sierra)10.11(El Capitan)10.10(Yosemite)10.9 (Mavericks)10.8 (Mountain Lion)Download Linux (32-bit)Download Linux (64-bit)Download Version 9.5.2 Windows (32-bit) (with installer)Download Windows (64-bit) (with installer)Download Windows (32-bit) (no installer)Download Windows (64-bit) (no installer)Download macOS (Intel Processors)12 Monterey11 Big Sur10.15 Catalina, 10.14 (Mojave) and 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