Turbo Charge your Imac with a Sabrent Rocket 1TB and Wavlink Thunderbolt 3 enclosure.
This combination allows you to boot your imac using the Thunderbolt 3 port. Way faster than a standard fusion drive or SSD
Without having to remove the screen from the Imac
Wavlink ue02 - As Swift As Lightning
Largely different than the previous released USB specifications 3.0 and 3.1, Thunderbolt™ 3 port provides you a blazingly faster speed ever, you can transfer large files and videos in an instant.
Step 1: Prepare for the installation
Follow these instructions to prepare your external drive:
Connect the external hard drive to your Mac.
Launch Disk Utility (press Cmd + spacebar and start to type Disk Utility).
Before this next step – if you are running High Sierra or later you will need to click on the View drop down below the close minimise buttons. Choose Show All Devices from the options. Now you will see the external root drive in addition to the volume below it.
Select the root drive in the sidebar (the next step won’t with if you only select the volume).
Click on Erase.
Choose Mac OS Extended (Journaled) as the Format.
Choose GUID Partition Map as the Scheme.
Give your drive a name such as “macOS Catalina” or “Rocket”.
Click on Erase.
Wait while Disk Utility creates the partition and sets up the drive (this can take a few minutes).
Then click Done.
Step 2: Get the MacOS install files
To download Catalina installer you could open System Preferences > Software Update. Your Mac will search for the latest software before offering to download it.
On the Mac App Store. Note that you just want to download the software, not install it, at this stage.
Step 3: Install macOS on the external drive
Now to install the Mac operating system on your external drive.
Open a finder window, go to Applications and find the Catalina installer (or whichever version of macOS you want to run).
Click on the installer.
On the first window, to set up the installation of macOS Catalina click Continue.
Agree to the software licence agreement.
Next, and this is important, click on Show All Disks. Do not click on Home as you don’t want to install on your main drive.
Click on the external drive.
Wait while the version of macOS installs on the drive. This process may take a while – if it tells you it will take 10 minutes it’s lying.
Note: This will not work if you didn’t set your external drive up as a GUID Partition.
Step 4: Run macOS on the external drive
There are two ways to run the version of macOS from your external drive
Open System Preferences > Startup Disk.
Select the external drive you wish to use to start up the Mac and click Restart.
Hold down Option/Alt during startup.
Pick the drive you wish to use to start up the Mac.