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If you did not download the file from the App Store, you must modify the file path after "applicationpath". After correctly entering the command with the name of your USB drive, press the [return] key. Check the name and path of your USB key. If it looks correct, press the [Y] key, then press [return].

When Terminal indicates the process is "Done," the creation of your bootable drive has succeeded. Cancel: I did not complete this guide. These translators are helping us fix the world! Want to contribute? Badges: I'm thinking of using this method to revert back to an older os due to my mac slowing down with Sierra.

Will I be able to install just Yosemite or el capitan? Without installing previous os upgrades?

How to create a bootable mac os x sierra usb flash drive

This way I can have a fresh mac book. Help Translate iFixit. Difficulty Easy. Steps 8. Time Required 30 minutes - 2 hours. Sections 1.

How to create a bootable macOS Catalina installer drive

How to create a bootable USB drive 8 steps. Flags 1. Member-Contributed Guide An awesome member of our community made this guide. Step 1 How to create a bootable USB drive. Add a comment. Add Comment Cancel. Step 2.

Download macOS

Step 3. Android Fix Kits. A new screen or battery is one kit away. Step 4. Step 5. Step 6. You're used to only seeing one room in the house, the one which has your Desktop, Folders and Applications. But there are actually four partitions, and one is used in extreme cases where you may want to completely reinstall the operating system macOS or Mac OS X on older Macs. Even if you completely wipe your Mac, and start again from scratch, the Recovery partition should still be there to make it possible to reinstall macOS, restore from your Time Machine nbackup, and repair or erase your hard disk.

How to Make a MacOS Mojave Installer USB Boot Drive

We look at what you can do in Recovery mode in detail here. It's a problem if you need to reinstall the operating system from scratch and the Recovery partition is missing. A problem, but luckily there are solutions available. Back in the days before Mac OS X Lion launched in there wasn't a Recovery partition, instead you needed to have a physical disc with the software on it and an optical drive to insert it into. These days it's rare to find a Mac with a optical drive, let alone find someone who has their original discs - not that Macs have shipped with install discs in recent times.

We'll look at what to do if you fit into this category later in this article. First you should check that your Mac definitely hasn't got a working Recovery partition.

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It's possbile that you have been using the wrong key combination, or that your keyboard wasn't working, for example. If your Mac does boot into MacOS then you can at least check Terminal to see if you have a recovery partition, here's how to do that:. You should see a list of all the volumes and partitions on your computer. Try using the Command-R process again.

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  7. Okay, so either your Recovery Partition is missing, or doesn't work and you've tried everything. So it's time to look at reinstalling macOS without it. First, if it's an option here, you should take time to back up up your Mac using Time Machine.

    How to create a bootable USB drive - iFixit Repair Guide

    This will enable you to restore all your files, folders and apps once you've reinstalled macOS. The first approach is to use a feature called Internet Recovery. Newer Macs are able to boot directly from an internet connection, even with no Recovery partition available. There are issues with Internet Recovery. In these cases it's usually best to find another network rather than create a USB Recovery Stick our next step.

    If you have Internet Recovery, then make use of it to reinstall macOS if possible. If you can't access Internet Recovery, then you are left with the option to create a bootable installer from a flash drive at least 12GB in size. Note that this completely erases the USB flash drive, so be careful to remove any files from it first. We cover how to create a bootable installer for macOS here , but we'll give an overview of the method below.