If you don't, you'll have to redownload the installer from the Mac App Store before you can create a bootable installer drive. Create the Yosemite install drive: The options. Sep 27, 2017 The Mac App Store is the default way to upgrade or install macOS, but it doesn’t work for everyone. Maybe you’ve got multiple Macs and a limited amount of bandwidth, and don’t want to download the entire operating system for every system. Or maybe you’re looking to install the operating system from scratch.

How to create a bootable macOS Catalina installer drive Put the macOS Catalina installer on an external USB thumb drive or hard drive and use it to install the operating system on a 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. Mac apps to un loop your android phone.

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.

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.

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:

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:

App to find duplicate media composer media files on mac free. Nov 30, 2015 It has never been easier to see how much space each file takes. With Duplicate File Finder Finder, you can scan as many folders as you wish. All you need to do is Drag and Drop the folders or disks into the app and click the Scan button. List of the best Duplicate File Finder features: SCANNING fast scanning algorithm. Get rid of duplicate files and folders withDuplicate File Finder Pro. Duplicate File Finder Pro allows you to select and remove duplicate pictures, videos, music, documents, archives, exact duplicate folders and even similar folders. Launch the app and drop the folders to start scanning them. Click the Scan button.

Catalina:

Mojave:

High Sierra:

El Capitan:

Get an ultimate backup app

Data loss? Impossible with Get Backup Pro on Mac.

There are times when having a bootable USB drive for Mac is important. There is also an argument to be made to have an Apple backup available at all times. Here, we’ll walk you though why you may want to do so, and how to backup Mac.

A backup plan for all times

Pdf converter master mac app. Free CutePDF WriterCutePDF Writer is one of the best free PDF writer programs available that allows you to export any files generated from a Windows application to a PDF file. Available in multiple different languages. Other Top Free PDF Writer Tools Online 1. Supported models include Windows 98, ME, 2000, XP, Vista, Windows 7, Windows 8, and Windows 10.Pros:. You can export documents from their original file formats to PDF by choosing CutePDF Writer and by accessing the print menu on your computer.

Get Setapp for all the tools you need to backup data and handle bootable drives for seamless security on Mac.

What is a Bootable USB or External Drive?

Simply stated, a bootable USB Mac drive is one that has a version (or versions) of macOS available on a disk that isn’t your machine. Whether it’s an external hard drive or a USB ‘thumb’ drive, both are considered bootable drives.

For the sake of clarity, we’ll simply refer to any external drive as a USB drive.

Before you begin, you’ll need to download the macOS version you’d like to use directly from Apple. It will download directly to your Applications folder; if your Mac starts to try to download and install the version of macOS you downloaded, simply quit the installation process.

How to Backup Mac to External Hard Drive

Curious how to create a bootable external drive for Mac? We’ve got you covered. First, you’ll need a USB drive, preferably one that is formatted to macOS Extended for any macOS backup to serve as your startup disk creator. Once you’ve done that, connect the USB drive to your machine, open the Terminal application on your Mac. Depending on the version of macOS you downloaded, enter one of the following commands:

Catalina: sudo /Applications/Install macOS Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
Mojave: sudo /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
High Sierra: sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
Sierra: sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install macOS Sierra.app
El Capitan: sudo /Applications/Install OS X El Capitan.app/Con

App To Create Bootable Usb Mac