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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.
What you need to create a bootable installer
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- A USB flash drive or other secondary volume, formatted as Mac OS Extended, with at least 12GB of available storage
- A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra, or El Capitan
Download macOS
- Download: macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra
These download to your Applications folder as an app named Install macOS [version name]. If the installer opens after downloading, 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 downloads as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named 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
MyVolume
in these commands with the name of your volume.
Big Sur:*
Catalina:*
Mojave:*
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 is done in the command for El Capitan.
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 shows the progress as the volume is erased. - After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume. Click OK to allow the copy to proceed.
- When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Big Sur. You can now quit Terminal and eject the volume.
Use the bootable installer
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
Apple silicon
- Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.
- Turn on your Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes and a gear icon labled Options.
- Select the volume containing the bootable installer, then click Continue.
- When the macOS installer opens, follow the onscreen instructions.
Intel processor
- 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 showing your bootable volumes.
- Select the volume containing the bootable installer. Then click the up arrow or press Return.
If you can't start up from the bootable installer, make sure that the External Boot setting in Startup Security Utility is 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.
Learn more
For more information about the createinstallmedia
command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter the appropriate path in Terminal:
- 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
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.
The Mac OS sierra stands thirteenth in the Mac OS series. Mac OS sierra launched in mid-2016 made a drastic entry into the market after the OS X. Mac OS sierra made a revolutionary shift from the recent trends in the Mac OS history. The Mac OS series had some issues when it came to the graphical user interface which was frowned upon by many Apple users. The Mac OS sierra broke the ice with its release proving to be the best in class in terms of graphical user interface as well as hardware interfacing.
The Mac OS sierra beta version had the best compatibility results compared to all other OS released by apple in 2016. The Mac OS sierra gained the trust of the end-users with the addition of Siri and Apple pay support in safari.
License
Official Installer
File Size
4.8GB
Language
English
Developer
Apple Inc.
Overview
The Mac OS sierra differed from its successors with revolutionary features that hauled the operating system into drastic movement in the market. The overall look and appeal of the operating system under usage seemed to be the reason why the end-users loved the operating system upon its release. Here are some features you must not miss if you are a Mac OS sierra user.
1. The Auto Unlock feature
This tech feature allows you to pair your favourite apple device with your MacBook or a Macintosh computer. Once you have paired through Bluetooth or Wi-Fi your favourite apple device say the apple watch, when the watch is in close proximity with the device it automatically unlocks without you entering the passcode. This is a feature that will be really useful for hardworking professionals who are on a constant run. Well, the practicality with the feature. Now for this feature to work you need a Mac that is 2013 or older. There is a time of flight feature that is imbibed within the feature to prevent attacks from relay usage so that your device is also not misused.
2. Night Shift
This is the same feature that is present in the previous generation of the Mac OS series but with a small tweak. Before you could not set the time at which the night mode must activate, but with this Sierra OS, you can set the preferred time at which you want to toggle the might mode. This can be set by going to the Preferences tab in the settings tool. This feature was very much useful for people who work round the clock on their systems.
3. Universal Clipboard
The universal clipboard is the counterpart with the auto-unlock feature. If you are Mac system is paired along with your iOS 10 devices, then you can share the links that you have copied or cut and paste across the devices that are paired along with your devices. This is also helpful in sharing rich content like photos, videos as well across the platforms. The universal clipboard feature was well appreciated by the end-users due to the integration of the devices across the various apple devices.
4. Picture in picture feature
Now the Mac users can use various pictures within several pictures. This will help the user to access more than one picture at a time and is definitely a boon for the people who are involved in editing photos. You can also play videos in the application while there are several background applications that are running behind. There are a lot of other additional adaptabilities as well that enables the picture in picture feature to be a wonderful hit among the users.
5. Gatekeeper
The Mac OS Sierra has a major upgrade in the Gatekeeper user interface by adding two new security features that make the usage of your system much safer and save you from data theft. There is an Anywhere option in the system preference tab that allows the user to execute software programs without getting permission to run the same.
The Code-sign disk feature would help the developer to add a signature of his own so that it cannot be tampered by an attacker. If the attacker tries to infect the software with his malicious code, he would have to require to re-write his files under a new file disk that won’t be passed by the Gatekeeper.
System Requirements
- Mac Book Pro – Mid 2010 or later.
- Mac Book Air – Late 2010 or later.
- Mac mini – Mid 2010 or later.
- Mac Pro – Mid 2010 or later.
- iMac-2009 or later.
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Download Mac OS Sierra
You can download the Mac OS Sierra installer from the ISO river website by clicking the below link and install it in your system if it meets the following standards. If you have an older system, some of the features of the sierra might not work. Download the installer and install the Mac OS Sierra onto your favorite Mac device.
Mac Os Sierra Virtual Disk Image Download
Download Mac OS Sierra 10.12 ISO and DMG Image for free - ISORIVER
You can download the Mac OS Sierra installer from the ISO river website by clicking the below link and install it in your system if it meets the following standards. If you have an older system, some of the features of the sierra might not work.
Price Currency: USD
Operating System: Mac OS Sierra 10.12
Mac Os Disk Image Download
Mac Os Disk Image Download
Application Category: OS