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1. How To Download Mac Os And Install From Usb Pc Camera
2. How To Download Macos And Install From Usb Pc Camera
3. Install Mac Os From Usb

Make your Mac invincible

The easiest way to create a USB flash installer is with the free program, Disk Creator. Download the macOS Sierra installer and Disk Creator. Insert an 8GB (or larger) flash drive. If you have any. Oct 17, 2019 This tutorial explains how to create a bootable Windows USB in macOS without any additional tools. The instructions are absolutely foolproof, no terminal is required and the resulting USB drive. Not only macOS High Sierra but you’ll also need a bootable USB drive to install new versions of macOS Mojave, macOS Catalina, and updated versions. A bootable flash drive is an external hard drive or optical disk that is created with a computer operating system and can be used to boot a desktop computer or laptop instead of the Windows. Keep in mind, this is not the same as using an external device to install macOS, which lets you install macOS from an external USB device. The method described here actually creates a fully functioning macOS Sierra installation on an external USB device. This allows you to take a fully-fledged macOS installation with you wherever you go, for.

• Not only macOS High Sierra but you’ll also need a bootable USB drive to install new versions of macOS Mojave, macOS Catalina, and updated versions. A bootable flash drive is an external hard drive or optical disk that is created with a computer operating system and can be used to boot a desktop computer or laptop instead of the Windows.
• Mar 12, 2020 macOS Catalina, macOS Mojave, or macOS High Sierra Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation.

Normally when you install a new version of macOS, you just install it over the previous version. It’s quick, easy and means we can be back up and running in no time, with all your apps and data ready to use. Your data remains but your software and file junk remains as well.

That’s why, sometimes, it makes more sense to run a clean install. Whether it’s because your Mac has accumulated so many junk files that it’s performance is badly affected or because you’re passing your Mac onto someone else and want to make sure all your data is removed. Or maybe you just want that fresh out of the box Mac experience again. Whatever your reasons, here is how to clean install macOS High Sierra.

How to prepare your Mac for the clean install

Before you do anything, check that your Mac is able to run Apple's new operating system.

To complete the clean install procedure described below, you'll need:

• macOS High Sierra Installer,available from the Mac App Store.
• a 16GB or larger USB flash drive
  Notice: USB drive is needed for a clean install on your Mac’s startup drive. If you plan to clean install macOS on a non-startup drive, you don't need it.
• go for a system cleanup and backup your data - this will allow you to easily return your Mac to the condition it was in before you installed macOS.
• and an hour or two to spare.

Choose the right way to clean install macOS High Sierra

Before you proceed, you need to make a choice how to run a clean install. If you only have one drive and it’s not partitioned and this is where you have all your files and your OS, your choice is to clean install on the startup drive. This way entails one important fact: all your files and data will be deleted during the process.

If you have another drive or volume other than your startup drive, use the second way which is clean installing on a non-startup drive. It’s a more lenient and less intrusive way because your Mac doesn’t get wiped clean, only your system.

If you don’t know which one you have, go with the first option, startup drive.

How to clean install macOS on a startup drive

Once you have everything that's needed, let's begin. Don’t worry, this step-by-step guide will walk you through all you need to do.

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The process of performing a clean install involves wiping your Mac’s main drive clean so it’s essential that you back it up immediately before you start. You might not want to backup the files you don’t need and system junk, so make sure to clean that up beforehand. An easy way to go about this is to get a Mac cleaning app like CleanMyMac. It will save to hours of manual file cleanup and polish your system before the backup.

Start with a system cleanup

Delete everything you don't need - large and old files and archives, useless apps, cache data and other junk, duplicate files - all these files silently eat up the disk space, duplicate images are especially hard to find out.

You can always use CleanMyMac to cleanup macOS system junk, large and old files, and remove unwanted apps. You could do it manually, but CleanMyMac only all it takes is a few clicks.

Then you can use Gemini to easily find duplicate files and folders on your hard drive, so you can delete them and save precious storage space.

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Backup your data

Now, for the backup itself use Get Backup Pro. It’s more powerful than Apple’s own Time Machine. It’s also a good idea to create a bootable clone, so if anything goes wrong you can go back to where you started easily. Also, a cloned drive makes copying files back to your newly-updated system very easy. And move your images and documents into the cloud or to an external drive, just to be on the safe side.

As well as backing up your Mac, you should also take screenshots of settings in any apps you’ve customized so that you can set them up again quickly later. And make sure you have a record of license codes for apps and passwords for websites.

Clean install macOS, securely

Your Mac deserves a fresh start. Get the right tools for clean installing Apple's operating system.

Create a bootable macOS installer

1. Download macOS High Sierra from the App Store. Here is a link to find it on apple.com.
   
2. When it’s finished, the installer will launch. As soon as it does, select File and Quit (or keyboard shortcut Command-Q) so it doesn’t install. The installer will remain in your Applications folder.
   
3. Plug in the USB stick and launch Disk Utilities.
   It’s a good idea to use a USB stick to put the bootable installer onto. It will need to be at least 8GB in size.
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.
6. When it’s finished, click Done and close Disk Utility.
   
7. Launch Terminal either by searching for it in Spotlight or navigating to the Utilities folder in Applications.
8. Type, or paste, the following command into Terminal, where [YOUR DRIVE NAME] is the name you gave the installer drive when you formatted it:
   sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/[YOUR DRIVE NAME] --applicationpath /Applications/Install macOS High Sierra.app
   Notice: Remember to replace [YOUR DRIVE NAME] with the name of your installer disk.
9. Hit Return.
10. Type in your admin password and wait.
11. When the process is finished, the word Done will appear in the Terminal window.
12. You can then quit Terminal

Install macOS on your startup disk drive

Make sure you backup your Mac to keep your important files, before taking next step, that erase your Mac’s Startup drive.

To erase your Mac’s main drive:

• Go to System Preferences
• Сlick Startup disk and choose the installer you just created.
• Restart your Mac and hold down Command-R to boot into recovery mode.
• Take your bootable USB and connect it to your Mac.

When the macOS Utilities screen appears, follow these steps:

• Select Reinstall a new copy of macOS.
• Click Continue, then click Continue again when the next window appears.
• Agree to the terms and conditions, then select your Mac’s internal drive.
• Click Install.
• Wait for macOS High Sierra to install and your Mac to restart.

When your Mac has restarted, you’ll need to follow the process of setting it up as if it was a brand new Mac. So, you’ll need to connect to your wifi router and type in the password. Then you’ll need to type in the details for your iCloud account. Then you’ll have to set up a new admin user account.

Once you’ve done that, you can start installing apps. In order to re-install Setapp apps, go to setapp.com to get Setapp installer or download Setapp here. You’ll need your username and password.

It’s a good idea to only download those apps you need to use straight away. Other apps can be downloaded as and when you need them. That way you avoid cluttering up your brand new macOS.

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If you use a cloud service like Dropbox, now is the time to re-connect. And you can copy any documents, photos or other files you need from the backup you made at the start.

Find more information about Apple Mac update

Clean Install macOS High Sierra on a non-startup drive

You don’t need a backup for this option, it’s safer and faster than the previous way but only available to you if you have an extra drive or your drive is broken down into volumes.

Here’s how to instal your new macOS on the non-startup disk.

Step 1. Erase your non-startup drive

Before you install the new OS on it, you need to erase all data on the drive you’ve chosen for it. To do it, use Disk Utility. Choose the volume you’d like to clean up and click Erase. Mac app store.

If you still need some info from that drive, you can use an app like ChronoSync Express to sync it with another drive and keep the files.

Step 2. Download the macOS High Sierra Installer from the Mac App Store

To download it, open the Mac App Store and go to the Updates tab (Here is a link.) When your installer is downloaded it will launch automatically but you need to quit it.

Fortunately, for this option you don’t need to create a specific bootable drive and you can simply use the installer from your startup drive and install the macOS onto the other one.

Step 3. Install macOS High Sierra to your non-startup drive

Launch the Installer from the Applications folder and press Continue. Change the target drive for installation. macOS will offer you startup drive by default so you need to click Show All Disks button and choose your non-startup disk volume. From then on simply follow the installation guide and after that you’ll have to set up your Mac as a new one. That entails creating a new user account, setting up date and time zone etc.

Now that you have the latest macOS, you can enjoy its superior features and top performance. Clean install (when performed on a startup drive) does remove your apps so if you don’t feel like looking for every app and their licenses again, get Setapp. More than 100 apps in one suite available by subscription. Saves you time and money on looking for apps for your daily tasks.

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Reinstall from macOS Recovery

macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.

1. Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.

Command (⌘)-R

Reinstall the latest macOS that was installed on your Mac (recommended).

Option-⌘-R

Upgrade to the latest macOS that is compatible with your Mac.

Shift-Option-⌘-R

Reinstall the macOS that came with your Mac, or the closest version still available.

You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.

When you see the utilities window, you have started up from macOS Recovery.

2. Decide whether to erase (format) your disk

You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.

3. Install macOS

When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.

• If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
• If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
• If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
• If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.

Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

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If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.

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macOS Recovery exceptions

The version of macOS offered by macOS Recovery might vary in some cases:

• If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
• If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
• If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
• If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.

If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.

Other ways to install macOS

• You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
• Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.