How to make bootable high sierra usb

You can also use your bootable installer to install macOS on a separate volume of your hard drive or on a partition if you are running an older version of the Mac OS.

A bootable install volume of macOS Making a USB install drive requires the usage of precise syntax at the command line with superuser privileges, using the wrong syntax could lead to unintended data loss. If the file size of the High Sierra installer is not over 5GB then you have the incomplete installer and will need to download the complete macOS High Sierra installer application as described here in order to create a bootable installer drive. Select the High Sierra installer at this screen. If you had previously created a boot installer for the High Sierra beta you may notice the syntax is different for createinstallmedia is different with the final version, part of that is to accommodate the new file name of the application installer, and the remainder removes the necessity of the —applicationpath flag and directive.

How to make bootable high sierra usb

To start the conversation again, simply ask a new question. I'm currently running Mojave I asked for assistance on the iDVD community, and a couple of very helpful people gave me various suggestions, one of which was to install High Sierra the last OS with which iDVD was totally compatible on a flash drive, and run iMovie and iDVD from it. However, I haven't been able to complete the installation. I downloaded the High Sierra installer, but when I open it, I get this message:. I tried copying the installer to the flash drive and opening it from there, but the same message popped up. MacBook Pro 13", macOS Page content loaded. Jan 10, PM in response to Ken Parsons. How to create a bootable installer for macOS - Apple Support. Then you will need to insert a flash drive large enough to install High Sierra on, plus the newly created installer. Boot from the installer, then use it to install High Sierra to the second flash drive. Jan 10, AM in response to keg I do have an external drive that I use for Time Machine backups.

DaBski says:.

Please note that before installing any system, you need to ensure there is sufficient space on your Mac. MacKeeper allows you to free up necessary gigabytes easily. The app will help you delete junk, duplicates, and unnecessary apps in a couple of clicks. Try MacKeeper now! It makes sense to create a bootable USB flash drive to install the High Sierra operating system if you want to quickly install it on several Macs without having to download the installer each time. Creating a bootable drive with a High Sierra installer is quite simple.

Not only will this walkthrough work for the macOS High Sierra beta, but it will also work for the final public release once available. A note about flash drives: You will need a USB flash drive to make this work. There are many USB 3. Keep in mind that the following tutorial will purge everything on the drive, so make sure you back up any important data before proceeding. Subscribe to our YouTube channel for more macOS how-tos.

How to make bootable high sierra usb

Maybe you've got multiple Macs and a limited amount of bandwidth, and don't want to download the entire operating system for every system. Or maybe you're looking to install the operating system from scratch. To begin, you need the installer for whatever version of macOS you want on a thumb drive. Head to the Mac App Store. If what you're looking for is the latest version of macOS, search for that operating system and click the "Download" or "Install" button. The download will take a while, so make sure your Mac is plugged in and has a consistent connection to the Internet. The installer will load when the process is done; simply close the window, then head to your Applications folder to confirm the installer is there. If you don't want the latest version of macOS, searching the App Store won't help you.

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Pete says:. Each command assumes that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. Why does the usb need to be 16 GB? Jan 10, PM in response to Ken Parsons. To download OS X However, I haven't been able to complete the installation. Press the power button, then immediately hold down the Option key. Beware that we have heard of people copying and pasting in the -- only for them to change to a — in Terminal, so be careful of that. Randy says:. Follow these steps:. It just works thanks. Steve says:. Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing. My external drive has only one USB port.

Please note that before installing any system, you need to ensure there is sufficient space on your Mac. MacKeeper allows you to free up necessary gigabytes easily.

If you're using a Mac with the Apple T2 Security Chip and you can't start up from the bootable installer, make sure that Startup Security Utility is set to allow booting from external or removable media. Enterprise administrators: download from Apple, not a locally hosted update server. Read the terms and conditions , then click Agree Steve says:. Disagree Agree. After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume. Hi guys. Can you help me create a new bootable drive so I can get any macOS operating on it again, please!?? I may need to purchase a separate external drive, just for occasions like this. Worked for me too, after having struggled a bit. Published Date: November 30,