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.
Modern external hard drives are also incredibly fast, thanks to USB-C connections and SSD (Solid State Drive) technology, which means copying and moving lots of files takes a matter of seconds. For more information, just to the what to consider when buying an external hard drive section. Upgrade your MacBook Pro to an SSD for up to 6x the capacity and 106x the speed of the original drive. Includes DIY install videos to make upgrading easy. WD My Passport For Mac (Best Overall) The Western Digital 2TB My Passport For Mac is the perfect. OWC Aura N 480GB Solid State Drive for select 2013 and later Macs Designed for your Mac, just install, migrate your data, and enjoy the great performance of flash storage with the Aura N.
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
MyVolumein 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
Yto 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.
Solid State Drive For Macbook Pro 13
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:
Catalina:
Mojave:
High Sierra:
Solid State Drive For Mac
El Capitan:
In this article, you will learn how to speed up your older iMac by booting to an external solid state drive. For this example, you will discover how you can boot to Mac OS Mojave using a Samsung T5 SSD.
Solid State Drive For Mac Mini
Before we get into how to do it, let's cover a few reasons why you might want to consider booting to an external SSD with Mac OS Mojave installed. This may surprise you, but even in 2019, some iMacs come with a 5,400 RPM spinning hard drive installed.
Hard drives that run at 5,400 RPM or 7,200 RPM are noticeably slower than modern solid state drives. A solid state drive is also slightly faster than Apple's Fusion drives, which are a combination of flash storage and a traditional spinning hard drive.
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.
Solid State Drive For Macbook Pro 13
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:
Catalina:
Mojave:
High Sierra:
Solid State Drive For Mac
El Capitan:
In this article, you will learn how to speed up your older iMac by booting to an external solid state drive. For this example, you will discover how you can boot to Mac OS Mojave using a Samsung T5 SSD.
Solid State Drive For Mac Mini
Before we get into how to do it, let's cover a few reasons why you might want to consider booting to an external SSD with Mac OS Mojave installed. This may surprise you, but even in 2019, some iMacs come with a 5,400 RPM spinning hard drive installed.
Hard drives that run at 5,400 RPM or 7,200 RPM are noticeably slower than modern solid state drives. A solid state drive is also slightly faster than Apple's Fusion drives, which are a combination of flash storage and a traditional spinning hard drive.
If you don't upgrade to an SSD when you order your iMac, the only way to upgrade to a solid state drive afterward is to remove the iMac screen. Removing the iMac display screen is the only way to gain access to the inner components of the computer. A more cost effective and less intrusive method is to use an external solid state drive instead, like the Samsung T5.
Booting from a solid state drive like the Samsung T5 should give you a boost in performance, especially if you are running an older iMac with a 5,400 RPM hard drive. On top of booting from an external solid state drive, it is also a good idea to store your media files on another solid state drive separate from your operating system.
Having two solid state drives will speed up your photo and video editing workflow and video rendering times, and as of 2019, the prices on solid state drives have come down considerably. For a step-by-step tutorial on how to set up an external boot drive with Mac OS Mojave, check out the video tutorial in this article.
If you are running a similar setup using solid state drives, let me know in the comment section below.
