Create a bootable macOS installer

1. Download macOS High Sierra from the App Store.
2. When it's finished, the installer will launch.
3. Plug in the USB stick and launch Disk Utilities.
4. Click the Erase tab and make sure Mac OS Extended (Journaled) is selected in the format tab.
5. Give the USB stick a name, then click Erase.

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Regarding this, how do I reinstall OSX from USB?

Simply plug your created USB drive into an open USB port on your Mac. Power on the system, or restart it if it's already on. Immediately press and hold the Option (Alt) key on your keyboard when it starts booting. You should now see an option to select your USB drive as a startup disk.

Also, how do I wipe my Mac and reinstall OS? Select your startup drive on the left (typically Macintosh HD), switch to the Erase tab and choose Mac OS Extended (Journaled) from the Format drop-down menu. Select Erase and then confirm your choice. Quit out of the Disk Utility app, and this time choose Reinstall OS X and Continue.

Accordingly, how do I do a clean install of macOS High Sierra?

How to Perform a Clean Install of macOS High Sierra

1. Step 1: Backup Your Mac. As noted, we're going to completely erase everything on the Mac.
2. Step 2: Create a Bootable macOS High Sierra Installer.
3. Step 3: Erase and Reformat the Mac's Boot Drive.
4. Step 4: Install macOS High Sierra.
5. Step 5: Restore Data, Files and Apps.

Where can I download Mac High Sierra?

How to install macOS High Sierra

• Launch the App Store app, located in your Applications folder.
• Look for macOS High Sierra in the App Store.
• This should bring you to the High Sierra section of the App Store, and you can read Apple's description of the new OS there.
• When the download finishes, the installer will automatically launch.

Related Question Answers

How do I make a bootable USB for Mac High Sierra?

Make a bootable installer drive: The quick way

1. Connect your drive to your Mac. It's OK if it's not formatted as a Mac drive. The app will reformat it.
2. Launch Install Disk Creator.
3. In the main window, you'll see a pop-up menu under “Select the volume to become the installer.” Click on the menu and select your drive.

How do I downgrade from Catalina to Mojave?

How to downgrade from MacOS Catalina to Mojave

1. Step 1: Back up your Mac.
2. Step 2: Enable external media booting.
3. Step 3: Download MacOS Mojave.
4. Step 4: Prepare your drive.
5. Step 6: Wipe your Mac's drive.
6. Step 7: Install Mojave.
7. Step 8: Use Time Machine.

How do you boot from a USB drive on a Mac?

Getting your Mac to load from a USB drive is fairly straightforward.

1. Insert the USB boot media into an open USB slot.
2. Press the Power button to turn on your Mac (or Restart your Mac if it's already on).
3. When you hear the startup chime, press and hold the Option key.

Can I still download macOS High Sierra?

Yes, Mac OS High Sierra is still available to download. I can also be downloaded as an update from the Mac App Store and as an installation file. Compatibility is very similar to Mac OS Sierra and requires a Mac from late 2009. There are newer versions of the OS available too, with a security update for 10.13.

How do I download full High Sierra installer?

How to Download the Full “Install macOS High Sierra.app” Application

1. Go to dosdude1.com here and download the High Sierra patcher application*
2. Launch “MacOS High Sierra Patcher” and ignore everything about patching, instead pull down the “Tools” menu and choose “Download MacOS High Sierra”

Can I install Mac OS on a USB drive?

There are two ways you can install OS X on to your external hard disk: by reinstalling OS X from the OS X Utilities repair screen or by downloading OS X from the App Store and running the installer. I'll show you both methods in case one isn't working for you. The easiest way is to download OS X from the App Store.

How do I install OSX on new hard drive from USB?

To avoid having to install OS X twice, do the following.

1. Insert the flash drive in a USB port on your Mac.
2. Start the Mac and hold down the option key.
3. Select to boot from the flash drive.
4. Use the Disk Utility application to create a single partition to install El Capitan (OS X 10.11).
5. Quit the Disk Utility application.

Does recovery mode delete everything Mac?

2 Answers. Reinstalling macOS from the recovery menu does not erase your data. However, if there is a corruption issue, your data may be corrupted as well, its really hard to tell.

How do I install operating system?

Steps

1. Insert the installation disk or flash drive.
2. Restart your computer.
3. Wait for the computer's first startup screen to appear.
4. Press and hold Del or F2 to enter the BIOS page.
5. Locate the "Boot Order" section.
6. Select the location from which you want to start your computer.

How do I install the latest Mac OS?

How to update the software on your Mac

1. Choose System Preferences from the Apple menu ?, then click Software Update to check for updates.
2. If any updates are available, click the Update Now button to install them.
3. When Software Update says that your Mac is up to date, the installed version of macOS and all of its apps are also up to date.

How do I install Windows from a USB drive?

Steps

1. Check the computer's architecture number.
2. Make sure that you have at least a 4-gigabyte flash drive.
3. Plug the flash drive into your computer.
4. Format the flash drive for FAT32 or exFAT.
5. Download the Windows installation tool.
6. Run the installation tool.
7. Create your bootable flash drive.

How can I make USB bootable?

To create a bootable USB flash drive

1. Insert a USB flash drive into a running computer.
2. Open a Command Prompt window as an administrator.
3. Type diskpart .
4. In the new command line window that opens, to determine the USB flash drive number or drive letter, at the command prompt, type list disk , and then click ENTER.

What is the latest Mac OS?

Apple's newest Mac operating system is macOS 10.15, also known as macOS Catalina. This is the fifteenth major release of the Mac operating system. macOS 10.14 Mojave supports most Macs from 2012 onward. If yours ran macOS 10.14 Mojave, it will almost certainly run Catalina.

How do I restore my High Sierra?

Hold down Command+Option+Shift+R to boot into recovery mode. Note, you can also boot into Recovery mode by pressing Command+R. However, adding Option+Shift will allow you to reinstall High Sierra, if your Mac came with it installed. Click on Disk Utility in the macOS Utilities window.

How do I reinstall Mac OS from external hard drive?

Start your computer with the external drive connected to your computer. Hold down the "Option" key while your Mac boots. Holding down the Option key provides you with a list of bootable drives. Select the external drive you used to create the install image and then wait for your Mac to boot to the hard disk.

How do you reinstall the operating system on a Mac?

To use Recovery Mode, follow these instructions:

1. Shut down your Mac.
2. Press the Power button (the button marked with a O with a 1 through it)
3. Immediately press the command (cloverleaf) key and R together.
4. Make sure you're connected to the internet through Wi-Fi.
5. Select Install Mac OS X, then click Continue.
6. Wait.

How do I completely wipe my Mac?

How to Wipe a Mac Hard Disk Drive (HDD)

1. Make sure your Mac is turned off.
2. Press the power button.
3. Immediately hold down the command and R keys.
4. Wait until the Apple logo appears.
5. Select “Disk Utility” from the OS X Utilities list.
6. Select the disk you'd like to erase by clicking on it in the sidebar.

How do I wipe my MacBook Pro to sell?

Factory reset You need to put your MacBook ($799 at Walmart) into recovery mode in order to erase all of your data and reinstall MacOS. To enter recovery mode, restart your Mac and immediately press and hold Command-R. You can release the keys when you see the Apple logo. Next, you'll see the MacOS Utilities window.

How do I reinstall operating system on Mac?

Reinstall your computer's original version of macOS from the Internet: Press and hold Shift-Option-Command-R until a spinning globe appears, then release the keys. This option reinstalls the most recent version of macOS that came with your computer, including any available updates to that version.