Install Mac External Hard Drive

Install Mac To External Hard Drive. I used a free app called Install Disk Creator to make the installation drive. Download Install Disk Creator by clicking on the link. When the download is done, you can move it over to your Applications folder. Then follow these steps to create your bootable macOS Catalina drive. Connect your drive to your. Dec 02, 2021 Currently, if you only have a Mac computer with macOS High Sierra or above and couldn't find a Windows computer to use our Windows version, you can still try to install and run Mac OS X 10.12 or 10.11 on an external hard drive to make M4VGear work under old version of Mac OSX. How to Install macOS Monterey on External Hard Drive Step 1. Prepare Your External Hard Drive. To successfully install macOS on an external drive, the drive you want to use. Download the macOS Monterey Installer. Launch the App Store on your Mac. Click the search bar, type in “macOS. How to install macOS on an external drive Step 1: Prepare the drive for installation. Follow these instructions to prepare your external drive - note that there. Step 2: Get the macOS install files. This step will depend on whether you want to run a macOS beta, a full version of. Step 3: Install. 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. OS X will automatically continue installing onto the external hard drive rather than booting up to your internal version of OS X.

External Hard Drive Mac To Windows

Next, click on Utilities to open Disk Utility. Then choose the External Hard drive or SSD drive where you want the Mac OS to be installed. Make sure the volume or disk is empty as this will delete all data from the disk. In My Case, it’s the StoreJet Transcend 3.0 Enclosure containing a Samsung 750. Pick the drive you wish to use to start up the Mac. For more advice about installing macOS or Mac OS X read How to update the Mac operating system and How to install old versions of OS X on a Mac. Sep 06, 2019 Connect the bootable USB installer to your target Mac. Power off your Mac from the  menu or by holding the power button. Briefly press the power button, then immediately hold the option key while your Mac boots up. Release the key when a startup disk selection screen appears.

To boot from your external Sierra drive, plug it into the Mac in question, press the power button, and hold the “Option key until the recovery disk screen appears. From there, you can select your external drive and click the arrow to boot into it for that session. You’ll boot into your macOS Sierra installation where you can use it as normal. While installing Ubuntu, choose advanced option in disk/partition selection & remember to select external (HDD) for boot loader (by default it will choose internal HDD). Once installation is over, re-boot the system. While in bios select boot device option, now boot to your external USB HDD.

Looking for a way to install and run OS X on an external hard drive? This can be useful for a couple of different reasons. Firstly, it allows you to run another copy of OS X without needing any additional Mac computer.

Also, since you can run a full copy of OS X on the external drive, it can be used for troubleshooting purposes on other Macs or it can be as a kind of virtual OS X. I’ve already written about how you can install OS X in VMware Fusion, but that takes up space on your Mac. Using an external drive, you can save space on your Mac, though it might be a bit slower if you are using USB 2.0.

In this article, I’ll walk you through the requirements and steps to install OS X onto an external hard drive.

Format External Hard Disk

The first thing you’re going to need to do is format the external hard drive properly. The file format has to be Mac OS X Journaled and you have to use the GUID partition map. To do this, open Disk Utility and connect the drive to your Mac.

Under External in the left hand menu, click on your external hard drive and then click on the Erase button. Make sure you backup any data before you erase the drive. When you click Erase, a dialog will pop up where you can configure some options.

Installing Macos On An External Drive

Give your drive a name, choose OS X Extended (Journaled) for Format and GUID Partition Map for Scheme. It should only take a minute or two for the drive to be erased and reformatted. Now your drive is ready for OS X.

Install Windows Mac External Hard Drive

Install OS X

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. Once you open the App Store, you’ll see a link on the right for the latest version of OS X (El Capitan as of this writing).

Go ahead and click the Download button to start downloading the installer. Note that if you already have that version of OS X installed, you’ll see a popup message appear asking if you still want to continue or not. Just click Continue.

Once it has been downloaded, just double-click the installer, which will be located in the Applications folder.

Keep clicking past the license agreement, etc., until you get to the screen that asks you which disk to install OS X on. By default, it is set to MacBook.

Click on the Show All Disks button and you’ll see an icon for the different disks and partitions on the Mac. I named my external hard drive OS X and that shows up in the middle.

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You can also tell it’s an external hard disk because it uses the icon with the orange hard drive. Click Continue and then follow the instructions to complete the installation. Note that your computer may restart during the install and you don’t have to do anything. OS X will automatically continue installing onto the external hard drive rather than booting up to your internal version of OS X.

Install Mac Osx On External Hard Drive

At the end of this article, I’ll show you how to boot up to the external hard drive, so skip down if you ended up using the App Store method. Note that by default, the Mac will start booting up directly to the external hard drive until you change it.

The second method to install OS X is to restart the Mac and press and hold the COMMAND + R keys. This will load up OS X Recovery.

Install A Bootable Mac Os On External Drive Windows 7

The OS X Utilities screen will appear and here you want to click on Reinstall OS X. Again, you’ll go through some basic screens, but when you get to the hard disk screen, click on Show All Disks again.

Using this method, you’ll have to login using your Apple ID and password so that the entire OS X installer can be downloaded off of Apple’s servers. Whichever method you choose, it will take anywhere from 15 to 30+ minutes to install OS X onto your external hard drive.

Install Mac External Hard Drive

While OS X is installing, your computer will restart a couple of times. Note that when it finally boots into OS X, that is the version running off your external drive. To switch back and forth between the internal and external drive, you have to restart your computer and hold down the OPTION key.

When you do that, you should see at least four icons. In my case, I have five because I have Windows installed using Boot Camp. Anyway, the grey MacBook and Recovery 10.11.2 icons are for my internal OS X and the orange OS X and Recovery 10.11.3 are for the version installed on my external drive.

Install Macos To An External Drive

Install Mac Os Sierra On External Hard Drive

Use the arrow keys to select which drive to boot from and then simply press Enter. If you have a newer Mac and a USB drive that supports USB 3.0, everything should run fairly fast. Overall, it’s a fairly straight-forward process and took me less than an hour to get everything working. If you have any questions, feel free to comment. Enjoy!