Hi everyone, sorry for my not very correct English.
I have to download MacOs High Sierra to create a USB installation (I have a MPB 2011 that does not support Mojave). The installer downloaded from the support apple link is not working (The selected item does not appear to be valid macOS Installer.) How can I fix it? Thanks in advance.
MacBook Pro 13", macOS 10.13
How to create a bootable installer for macOS - Apple Support
macOS 10.13 High Sierra - Technical Specifications:
https://support.apple.com/kb/SP765?locale=en_US
How to upgrade to macOS High Sierra
What happens if you try to Run that 4.2 GB file?
I used just the link that you indicated, but unfortunately with that file you can not create the installer.
Hi, I performed all the steps as you described, but unfortunately at the end I have an installer file of just 4.21 GB (and not 5.2 gb), in fact I can't proceed to create usb installer.
If I try to create usb installer with that 4.2gb file tells me that it is not valid.
But if you just double click in it does it run? You can CMD+q to quit it.
romina88 wrote:
I used just the link that you indicated, but unfortunately with that file you can not create the installer.
The little stub installer has created some on going issues.
You can try various work-a-rounds:
Verify you are not trying to use the very small stub installer some ~19 MB in size.
The full installer is 5-6 GB in size.
The stub is more of a place holder. If this is what you have delete the stub and empty the trash.
From Applications/Utilities/Terminal.app run this command, copy and paste:
sudo softwareupdate --clear-catalog
Now open the App Store and attempt the download again — you should get the full file.
If the full installer launches itself automatically after the download is complete, simply quit it like an other app.
There it will sit quietly in your Applications folder.
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Alternatively you can try holding the shift key when you download from the App Store.
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Alternatively you can initiate the install with the stub, 19MB installer (/Applications/Install macOS High Sierra), it will download the remaining install files and place them under /macOS Install Data.
Simply abort the install when it asks which disk you want to install to.
To restore the ability to create install media, do the following:
Open Terminal and run: sudo -s
Enter admin credentials to gain root access and cut-n-paste the following 3 commands
mkdir /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport
cd /macOS\ Install\ Data
find . -mount | cpio -pvdm /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport
You can now use the normal createinstallmedia command:
cd /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources
./createinstallmedia –help
ref: https://discussions.apple.com/thread/250243508?answerId=250459209022#250459209022
https://apple.stackexchange.com/questions/299731/macos-high-sierra-media-installer . :
"It is indeed SharedSupport folder missing that causes this. In order to fix it, you should launch the small 'stub' installer, it will download all needed files to your home (/Users/username). You will need to cancel the installation after downloading ends of course.
Then if you just move those files to 'stub' installer folder, like this for example: sudo mv /Users/username/macOS\ Install\ Data Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport and run createinstallmedia again, it will do what we want it to do."
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Alternate Method: How to Manually Build a Full MacOS Mojave Installer
http://osxdaily.com/2018/09/29/download-full-macos-mojave-installer/
http://osxdaily.com/2017/09/27/download-complete-macos-high-sierra-installer/
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Installer MacOs High Sierra