A folder named El Capitan will be created on the desktop to hold temporary files.
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Use instructions on the Apple website How to upgrade to OS X El Capitan to download InstallMacOSX.dmg.Įrase a 16 GB or larger flash drive.
This method was verified 2 days ago (4/17/20) by user Tak using Catalina on a MacBook Pro 2017 touchbar for use on iMac 2009 24”. The following steps can be used to create a USB installer for El Capitan. If you are trying to create a USB installation flash drive of use on another Mac computer, then you can still using the download file to create this installer.
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However, if the model Mac is too new to allow the installation for El Capitan, then message given below will occur when trying to create the Install OS X El Capitan application. There is a link on the Apple website How to upgrade to OS X El Capitan that will download a file that can be used to create the Install OS X El Capitan application. I 'found' a Install OS X El Capitan.app package and was able to create the bootable media. This version of OS X 10.11 cannot be installed on this computer. Unfortunately, running the InstallMacOSX.pkg package in the DMG failed: Using my MBP 16", I used the Download OS X El Capitan link on Apple's support site to get the installer. To create a bootable USB drive, I needed the Install OS X El Capitan.app package. I tried using "Internet Recovery" ( Option+ Command+ R) and a bootable USB drive that contained El Capitan, both of which ultimately failed with the same message. Quit the installed to restart your computer and try again. Contact the software manufacturer for assistance. This item is temporarily unavailable.Try again later.Īfter reading Wiped drive, now can’t reinstall El Capitan from Recovery because the “item is temporarily unavailable”, I supplied a different set of icloud credentials, and the process continued.Įventually, however, the installation failed with a different message: My first effort was thwarted by an error: I have an older, MacBook Pro (15-inch, Mid 2009) that I intend to give as a gift.įor security reasons, I decided that I was a good to format the drive and reinstall OS X El Capitan.
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