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.
Connect your USB drive to the Mac using the provided USB slots. Wait for it to be recognized and displayed on the desktop. Select the USB drive from the list in Disk Utility. Ensure it’s partitioned as “Mac OS Extended (Journaled)” under the “Partition” section in Disk Utility. A USB flash drive or other secondary volume formatted as Mac OS Extended, with at least 14GB of available storage A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra, or El Capitan. Bootable USB Stick for mac OS X El Capitan 10.11.6 USB Flash Drive for Full OS Recovery, Upgrade Reinstall System Install USB 16GB, Green. 3.8 out of 5 stars. Get it as soon as Wed, Aug 25. FREE Shipping on orders over $25 shipped by Amazon.
MyVolumein these commands with the name of your volume.
* If your Mac is using macOS Sierra or earlier, include the
--applicationpath argument and installer path, similar to the way this is done in the command for El Capitan.
After typing the command:
Yto confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased.
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model.
For information about the
createinstallmedia command and the arguments you can use with it, make sure that the macOS installer is in your Applications folder, then enter the appropriate path in Terminal:
Using both Windows and macOS, and suddenly mac refuses to boot. The reason behind this can be from a number of things that could go wrong. This includes system failure, bad updates, power failure, hardware failure. Unless there is a hardware problem that only can be diagnosed at the apple center you can fix your Apple computer.
It is an excellent practice always to have a bootable macOS USB, which you can easily create using macOS operating system. But since we’re here, you probably can want to make bootable USB using Windows 11 and 10. Let’s be real, and there are more Windows computers compared to MAC. Fortunately, you can use a Windows computer to create a bootable USB flash drive.
In this article, we’ll help you with the instructions to create a bootable macOS USB installation media from a Windows computer. So that you can use that USB to install or reinstall (upgrade) Apple’s macOS. You can create a macOS Catalina/sierra bootable USB using this guide to fix your operating system.
You will need a few things before you get started. The first essential thing in it is a USB drive would be awesome if you use a USB 3.0, but you can get the work done using a slow USB as well. So, in contrast, you need the following things.
The guide is simple and straightforward if you follow these steps.
Download and install TransMac on your Windows PC. It’s paid software with a 15-day trial, so you can use it within the time to create a bootable macOS USB flash drive. If you like the software and to support the developer you can buy the full version.
Plug the USB drive into your Windows computer that you’ll be using to fix your MacOS. And we are going to tell you something straightforward – backup if things are stored in USB Drive.
Step 1. Open the TransMac, and select Run as administrator. If you’re using the trial version, wait 15 seconds, and click Run.
Step 2. Use your USB drive right-click on it and select format disk format this will format the USB drive so that it can be used to store the Mac OS operating system. One thing you need to take care of that the USB drive needs in GPT partition in order to work on a Mac computer otherwise it won’t boot.
When it prompts select a name for your USB it doesn’t matter but just do it and click ok. If the formatting is completed successfully, click OK to continue.
Step 3. Again from the left sidebar right-click on the USB drive and select restore with disk image.
Step 4. Now browse to the location where the Mac OS system image file is located and click ok to load it.
Step 5. Click Yes to create the macOS USB bootable media.
It will take a few minutes to complete the process because the Mac Operating System is larger than any other operating system like Windows and LINUX in size. Now plug the USB drive into Mac computer in order to install, install or upgrade the operating system to the latest version of Mac OS, which can be Sierra or later.
THE TOOL CAN
If the USB flash drive is not working using TransMac, it could be still a partition problem. In this case, you want to redo the entire process again, but this time use the following steps to use the Diskpart command-line utility on Windows to create the appropriate GPT partition.
Now make a bootable USB using the TransMac software (follow instructions that are given above). Now connect the USB and power on your Mac computer while holding the option key and then select the USB Flash media to run the installation.
Learn using USB on MAC (Apple support page)
Learn more about making bootable USBs.
Make a bootable USB of Windows, Linux, Chrome and Android OS
Windows 10 Media creation tool Download and Creating Bootable USB Media