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bad cpu type in executable creating boot disk

my old iMac (El Capitan) I can't create a bootable installer using the sudo command in terminal...

sudo: unable to execute /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia: Bad CPU type in executable

any ideas?

Posted on Mar 5, 2023 9:35 AM

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Mar 7, 2023 12:22 PM in response to Pnccj7

Hi Pnccj7,

You started from a great resource: Create a bootable installer for macOS

You'll want to confirm the requirements from the same article are met. You can also view that section below.

"What you need to create a bootable installer

USB flash drive or other secondary volume with at least 14GB of available storage, formatted as Mac OS Extended.
Installer for OS X El Capitan or later. To get the full installer, your Mac must be using the latest version of OS X El Capitan, the latest version of macOS Sierra, or any later version of macOS. Download from a Mac that is compatible with the macOS you're downloading. Enterprise administrators: download from Apple, not a locally hosted update server. "

If met, you may need to change your default to use the zsh profile, find more information here: Use zsh as the default shell on your Mac

Should the issue remain, reach out to Apple Support directly to further assist.

Contact - Official Apple Support

Contact Apple for support and service - Apple Support

Best.

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bad cpu type in executable creating boot disk

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