The external drive that you’ll install Windows on needs to be prepared by erasing and formatting the drive for use with Windows. Warning: The erase, format, and partitioning process will delete all data currently contained on the external drive. 1) Ensure the external drive is connected to your Mac.
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.
Download macOS
Find the appropriate download link in the upgrade instructions for each macOS version:
macOS Catalina, macOS Mojave, ormacOS 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. Important: 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.
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. Important: 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.
OS X El Capitan
El Capitan downloads as a disk image. 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.
El Capitan downloads as a disk image. 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. Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended.
- 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 still 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.
Catalina:*
Mojave:*
High Sierra:*
El Capitan: - Press Return after typing 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 bootable installer is created. - When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina. You can now quit Terminal and eject the volume.
* If your Mac is using macOS Sierra or earlier, include the
--applicationpath
argument, similar to the way this argument is used in the command for El Capitan.Use the bootable installer
After creating the bootable installer, follow these steps to use it:
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- Plug the bootable installer into a compatible Mac.
- Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it. Your Mac will start up to macOS Recovery.
Learn about selecting a startup disk, including what to do if your Mac doesn't start up from it. - Choose your language, if prompted.
- A bootable installer doesn't download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu in the menu bar.
- 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 this path in Terminal:Install Macos On External Drive Without Reboot
Catalina:
Mojave:
High Sierra:
El Capitan:
It doesn't matter if it's a Windows Store or traditional desktop (Win32) app, they all end up installed (by default) on your primary computer's hard drive. Although this makes sense in most cases, there are many reasons you may want to install apps on a separate drive.
It could happen that you have a low-end device, such as a tablet or laptop, that came with a very limited local storage and you're running out of space. If you need to run demanding applications, you may want to install them on a faster hard drive to improve performance. Or it could be that you just want to keep your apps separate from the Windows 10 installation drive.
Whatever the reason it might be, Windows 10 includes a number of ways to help you install apps on an external hard drive or SD card storage, whether you're dealing with Windows Store or Win32 apps.
In this Windows 10 guide, we'll walk you through the steps to install traditional desktop and Store apps into a separate drive, and you'll also get the steps to move already installed apps to another location that being for speed or to save space on your primary drive.
How to install Windows Store apps on a separate drive
When your computer is running out of space, you want to use a faster drive, or you just want to keep apps in a separate location, do the following:
- Open Settings.
- Click on System.
- Click on Storage.
- Under 'Save locations,' and on 'New apps will save to,' select the new drive location.
Once you completed the steps, new apps you download from the Windows Store will now install automatically in the new location.
Moving Windows Store apps to another drive
If you already have Windows Store apps installed on your PC, and you don't want every app from the Store to install in a different location, you can move apps to a separate drive using the following steps:
- Open Settings.
- Click on System.
- Click on Apps & features.
- Select the app you want.
- Click the Move button.
- Select the destination drive from the drop-down menu.
- Click the Move button to relocate the app.
The process may take a few seconds depending on the size of the app you're trying to move. Although Settings lists both Store and desktop apps, you can only move apps from the Windows Store to a different drive.
Alternatively, you can always uninstall the app, use the instructions to change the save location, and reinstall the app in question from the Store.
How to install desktop apps on a separate drive
It's also possible to install traditional desktop (Win32) applications into a separate drive.
The process may vary per application, but almost always, you'll find an option to install the app on a separate hard drive.
For example, installing Apple's iTunes on Windows 10, after initializing the setup, in the installation options screen, there is a 'Destination Folder' section with a Change button that allows you to choose a separate drive to store the installation.
It's a pretty straightforward process, but then you'll come across desktop applications that make it a bit unclear where to find this option.
In the case of Firefox, when you launch the setup, you need to click the Options button, and under 'Destination Folder,' click the Browse button to select a secondary drive to store your installation files.
Unlike Windows Store apps, you can't move traditional desktop (Win32) apps to another drive, but you can, alternatively, uninstall the app, and reinstall it changing the Destination Folder option during the setup.
Wrapping things up
It should be noted that you can't just remove the drive and move it to another computer hoping that apps will run. It doesn't work that way. If you configure a secondary hard drive to install applications, that storage is pretty much tied to the device you used to install the app.
For traditional desktop applications, this will be a manual process. You may be able to find Registry hacks, but it's not recommended as it can cause an unknown number of errors.
Skype for business mac. While there are many good reasons to install apps on a separate drive, you must consider that adding more drives also adds more points of failures to your device.
More Windows 10 resources
For more help articles, coverage, and answers to common questions about Windows 10, visit the following resources:
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