Apple High Sierra Installer
In order for you to upgrade to High Sierra with a clean installation of macOS, You need to create a bootable macOS High Sierra USB drive. You can then use an External drive or the secondary volume (USB) to install the macOS using it as a startup disk.
Dec 06, 2017. Nov 03, 2017.
The command-line installation of macOS would come as savvy mainly for the system administrators. You really do not require a bootable installer to upgrade macOS or reinstalling the operating system, It only will be useful when you have multiple computers lying around and you need to download and use the installer each time.
You must also require a USB 3.0 Drive with at least 16 GB of storage and please ensure you have taken a backup of all the files in your USB 3.0 flash drive as this installation will erase and remove all the files from your flash drive.
You can get USB 3.0 from Here
Download macOS
You can download macOS High Sierra From Here
OR
if you have downloaded already macOS High Sierra directly, then the downloaded macOS itself to the applications folder as an individual app called as “Install macOS High Sierra”. Sometimes it is also possible that the installer opens itself right after downloading it, You need to ensure quitting it without proceeding to go with the installation directly. Also, it is important for you to download the correct version of macOS as per your mac.
How to create a bootable installer for macOS High Sierra
Step 1: Download macOS High Sierra.
Step 2: Once High Sierra is downloaded, You should make sure that you close the installer and Open the finder.
Step 3: In Finder, You need to head over to Application→Install macOS High Sierra right click on install macOS High Sierra and click Show package contents.
Or
If You have downloaded from the link then go to Download→ macOS High Sierra.
Step 4: Head over to open Content→Resources
Step 5: Using Finder another window and Go to Applications and Select Utilities→Terminal
Step 6: Type sudo followed by space
Step 7: Now from the original finder window opened in step 4, drag and drop the createinstallmedia to terminal
Step 8: Type —volume along with space
Step 9: Open Finder and click Go at the top followed by Goto folder menu or by pressing command + shift + g at the same time.
Step 10: Type /Volumes and click go to navigate to the volumes that are connected to your mac
Step 11: You should probably find your connected USB 3.0 Flash drive on your Mac in the Finder window
Step 12: Now Drag the USB 3.0 Flash drive volume to the Terminal window
Step 13: Now press Enter / Return on keyboard
Step 14: Type y so you can continue the progress and Press Enter / Return on a keyboard again.
After the above process, You can also use the USB 3.0 drive to boot into macOS High Sierra installer Once you connect your USB 3.0 flash drive, Then restart your Mac by pressing the Option (⌥) button modestly. Then you may select the macOS High Sierra Installer to get started with the installation.
macOS Catalina gives you more of everything you love about Mac. Experience music, TV, and podcasts in three all-new Mac apps. Enjoy your favorite iPad apps now on your Mac. Extend your workspace and expand your creativity with iPad and Apple Pencil. And discover smart new features in the apps you use every day. Now you can take everything you do above and beyond.
Check compatibility
If you're using one of these computers with OS X Mavericks or later,* you can install macOS Catalina. Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier.
MacBook introduced in 2015 or later
MacBook Air introduced in 2012 or later
MacBook Pro introduced in 2012 or later
Mac mini introduced in 2012 or later
iMac introduced in 2012 or later
iMac Pro (all models)
Mac Pro introduced in 2013 or later
* To upgrade from Lion or Mountain Lion, first upgrade to El Capitan, then upgrade to Catalina. To find your macOS version, Mac model, memory, and storage space, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Catalina, the installer will let you know. View the complete list of compatible computers.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
High Sierra Apple Support
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS Catalina
If you're using macOS Mojave, get macOS Catalina via Software Update: Choose Apple menu > System Preferences, then click Software Update.
Or use this link to open the macOS Catalina page on the App Store: Get macOS Catalina. Then click the Get button or iCloud download icon.
Begin installation
After downloading, the installer opens automatically.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Stay up to date
After installing macOS Catalina, you will be notified when updates to macOS Catalina are available. You can also use Software Update to check for updates: Choose Apple menu > System Preferences, then click Software Update.
Or get macOS Catalina automatically
If you're using OS X El Capitan v10.11.5 or later and your App Store preferences or Software Update preferences are set to download new updates when available, macOS Catalina will download conveniently in the background, making it even easier to upgrade. A notification will inform you when macOS Catalina is ready to be installed. Click Install to get started, or dismiss the notification to install later. When you're ready to install, just open the file named Install macOS Catalina from your Applications folder.
Learn more
High Sierra Installer Apple Store
Apple High Sierra Installer
- If the installer shows a list of apps that are not optimized for your Mac, learn about 32-bit app compatibility, then choose whether to proceed with the installation.
- For the strongest security and latest features, upgrade to macOS Catalina. If you have hardware or software that isn't compatible with Catalina, you might be able to install an earlier macOS, such as Mojave, High Sierra, Sierra, or El Capitan.
- You can also use macOS Recovery to reinstall macOS.