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 it on multiple computers without having to download the installer each time.
What you need to create a bootable installer
- A USB flash drive or other secondary volume, formatted as Mac OS Extended, with at least 12 GB of available storage
- A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra or El Capitan
Many Mac users like to make a bootable installer drive for installing OS X El Capitan, whether for performing a clean install, or for making it easier to install OS X 10.11 onto multiple Macs. We will walk through creating a bootable install flash drive from OS X El Capitan with the final public version. How to Create a Bootable Mac OS Installer from Windows Windows is not directly compatible with the HFS+ disk image formats used by macOS. You'll need to install Ubuntu Linux in VirtualBox to create the macOS recovery disc. Install VirtualBox v6.1.4 (not v6.0). How To: Create a Bootable Install USB Drive of Mac OS X 10.10 Yosemite How To: Watch Apple's Virtual WWDC 2020 Keynote Livestream Today on Any Device How To: Create a Bootable Install USB Drive of Mac OS X 10.11 El Capitan How To: Dual Boot Mac OS X Mavericks 10.9 & Yosemite 10.10. This is a Bootable, Universal Install CD-ROM of Mac OS 9.2.2, US English. Suitable for G3 & G4 Macintosh models capable of booting from a Classic Mac OS via CD-ROM. Mac OS CPU Software 4.9, includes the Mac OS ROM file v9.2.1 Top DL: The 9.2.2 universal OS installer CD's archive is a.zip compressed.iso image. It is OK to burn this back to.
Download macOS
- Download: macOS Big Sur, macOS Catalina, macOS Mojave or macOS High Sierra
These will download to your Applications folder as an app called Install macOS [version name]. If the installer opens after being downloaded, quit it without continuing installation. 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. - Download: OS X El Capitan
This will be downloaded as a disk image called InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, which has the name 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
- Connect the USB flash drive or other volume that you're using for the bootable installer.
- Open Terminal, which is in the Utilities folder of your Applications folder.
- Type or paste one of the following commands in Terminal. These assume that the installer is in your Applications folder and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace
MyVolumein these commands with the name of your volume.
Big Sur:*
Bootable Installer For Mac Os
Catalina:*
Mac Os Usb Installer
Mojave:*
How to set up a external hard drive for mac. High Sierra:*
El Capitan:
* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument and installer path, similar to the way this was done in the command for El Capitan. Avee player pc. Adobe premiere pro editing software free download.
After typing the command:
- Press Return to enter the command.
- When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
- When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal displaying the progress as the bootable installer is created.
- When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina. You can now quit Terminal and eject the volume.
Use the bootable installer
After creating the bootable installer, follow these steps to use it:
- Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.
- Press and hold the Option (Alt) ⌥ key immediately after turning on or restarting your Mac.
- Release the Option key when you see a dark screen displaying your bootable volumes.
If you can't start up from the bootable installer, make sure the External Boot setting in Startup Security Utility has been set to allow booting from external media. - Choose your language, if prompted.
- Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.
Bootable Installer Mac Os
Learn more
Create Mac Os Installer Usb
For more information about the createinstallmedia command and the arguments that you can use with it, make sure the macOS installer is in your Applications folder, then enter the appropriate path in Terminal:
Bootable Installer Mac Os
- Big Sur: /Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia
- Catalina: /Applications/Install macOS Catalina.app/Contents/Resources/createinstallmedia
- Mojave: /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia
- High Sierra: /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia
- El Capitan: /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia
