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These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.
Download macOS
Find the appropriate download link in the upgrade instructions for each macOS version:
macOS Catalina, macOS MojaveormacOS High Sierra
Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation. Important: To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
OS X El Capitan
El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer. Use the 'createinstallmedia' command in Terminal
* If your Mac is using macOS Sierra or earlier, include the
--applicationpath argument, similar to the way this argument is used in the command for El Capitan.
Use the bootable installer
After creating the bootable installer, follow these steps to use it:
Learn more
For more information about the
createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal:
Catalina:
Mojave:
Usb Fix Download For Mac Os
High Sierra:
El Capitan:
If your computer doesn't recognize your connected device, you might see an unknown error or a '0xE' error. If you do, follow these steps and try to connect your device again after each step:
For more help, follow the steps below for your Mac or Windows PC.
* Learn how to connect iPad Pro (11-inch) or iPad Pro 12.9-inch (3rd generation) to your computer. If you use a Mac
If you use a Windows PC
The steps differ depending on if you downloaded iTunes from the Microsoft Store or from Apple.
Usb Fix Download For PcIf you downloaded iTunes from the Microsoft Store
Follow these steps to reinstall the Apple Mobile Device USB driver:
If you downloaded iTunes from Apple
Follow these steps to reinstall the Apple Mobile Device USB driver:
If your device still isn't recognized
Check Device Manager to see if the Apple Mobile Device USB driver is installed. Follow these steps to open Device Manager:
If you don't see the Apple Mobile Device USB Driver or you see Unknown Device:
If you see the Apple Mobile Device USB driver with an error symbol:
If you see , , or next to the Apple Mobile Device USB driver, follow these steps:
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