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1. #MAKE BOOTABLE USB HARD DRIVE FOR MAC OS SIERRA MAC OSX#
2. #MAKE BOOTABLE USB HARD DRIVE FOR MAC OS SIERRA INSTALL#
3. #MAKE BOOTABLE USB HARD DRIVE FOR MAC OS SIERRA DOWNLOAD#

The second method is to use another Mac to create an install image using Terminal. The method is summarized in a comment in this Apple Community discussion thread This method requires 1) a functioning second Mac for running DiskMakerX and 2) a USB drive with at least 12 GB available. One way is to use DiskMakerX to create a bootable USB drive with a downloaded install image of the OSX loaded on it. I found two ways to go about doing this, but I have questions.

#MAKE BOOTABLE USB HARD DRIVE FOR MAC OS SIERRA MAC OSX#

Sw_vers - Print macOS operating system version.I’m trying to create a bootable USB flash drive to re-install Mac OSX High Sierra on my late 2013 27” inch iMac (3.2GHz/8GB RAM/ 3TB HDD) running 10.13.6 High Sierra. SP742 - macOS Sierra 10.12 - Technical Spec. SP765 - macOS High Sierra 10.13- Technical Spec. SP777 - macOS Mojave 10.14 - Technical Spec. SP803 - macOS Catalina 10.15 - Technical Spec.

HT201372 - Create a bootable installer for macOS. The macOS Startup Manager will then appear and you can select a startup drive.

To boot from an alternate drive restart your Mac while holding down the Option key. The build process can take 20 minutes or so to complete, wait for the 'Done' message If you see the message “ To continue we need to erase the disk at /Volumes/Untitled.” Type the letter Y and press Return. Sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app -nointeraction Sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ macOS\ Sierra.app -nointeraction Sudo /Applications/Install\ macOS\ High\ High Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ macOS\ High\ Sierra.app -nointeraction

Sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ macOS\ Mojave.app -nointeraction Sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ macOS\ Catalina.app -nointeraction Becasue we are using sudo you will be prompted for a password: Open the terminal and copy one of the following, single line commands. The program used to create a bootable drive ( createinstallmedia) is supplied as part of the installer App. You could name the drive to something different as long as you adjust the command line syntax below to match. The Terminal commands below assume that the drive is named Untitled. Name the drive ' Untitled' this name will be changed when the new volume is initialised. The drive must be formatted as a Mac OS Extended (Journaled) volume with a GUID Partition Table. This can be a hard drive, an SSD, or a USB stick. You need a Mac-formatted drive big enough to hold the installer and its data - 8 GiB.

#MAKE BOOTABLE USB HARD DRIVE FOR MAC OS SIERRA DOWNLOAD#

Then copy the installer App somewhere else so that you won't have to download it again.Īt the command line, spaces must be escaped so these become: Therefore your first step after downloading the installer should be to cancel the install. If you run the macOS installer from the /Applications folder, the installer app will be deleted. MacOS is distributed through the App Store which will download an installer app to the /Applications folder. Use a USB flash drive (or other removable media) as a startup disk from which to install macOS.