In this video tutorial, I will show you in an easy, fast and efficient way
how to create a boot disk and install the Operating System
“macOS Catalina”.
Using a “USB flash drive”.
Also known as “Pendrive”.
Okay okay!
This is Junior from JR Tech.
Although this procedure is super simple, for security reasons, I highly recommend
that you always keep a “Backup” of your files.
Also remembering that only logged in as "Administrator", it will be possible to perform
this procedure.
To create the “macOs Catalina” boot and installation disk, we will need
a “Pendrive” with at least 16gb of memory.
And attention, in this process the “Pendrive” will be formatted, that is, all the information
that is in it will be erased.
Let's start!
Download the “macOS Catalina” Operating System from the Apple web store.
Open a Finder window and Confirm that the “macOS Catalina” Installer App has been
saved correctly in the “Applications” folder.
Insert the “USB flash drive” into the computer.
Locate the “pendrive” icon on the Desktop.
Open a second Finder window, and locate once again the “macOS
Catalina” installer app inside the “Applications” folder.
On top of the installer app icon, right-click and select
“Show Package Contents”.
Open the “Contents” file folder.
Select and open the “Resources” folder.
And locate in here, a file called “createinstallmedia”.
Leave this file accessible here, because we will be using it soon.
All great so far!
Let's go to the next phase!
Open a terminal window;
And here on the command line, type in lowercase the command “sudo”,
sudo, and a space;
Then, go to the “createinstallmedia” file that we have available on the side, and drag
it into the terminal window.
In front of the command line that was created, write with lowercase the command “—volume”,
volume, and a space.
Go to the “USB Flash drive” icon here on the Desktop and also drag it into
the terminal.
Soon after, following the command line being created, write with lowercase
the command “—applicationpath”, applicationpath, and a space;
And to finish our command line, go to the “macOS Catalina"
and also drag it into the terminal window.
Congratulations!
That's it!
You've successfully done all the preparation for creating a boot disk and installing
"macOS Catalina".
Now, just click "Enter ”, enter your administrator password, and click “Enter”
again.
Type the letter “y”, and click “Enter” to confirm formatting the “USB flash
drive” and start creating the installation disk
. around 10 to 15 minutes.
It will depend on the settings that each machine.
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Let's continue!
We can see around here, that it's almost finished!
Ready!
If you followed my instructions correctly, it will be a window like this one that you will see
on your computer screen.
Notice here that the “USB Flash Drive” icon, which previously had no name, is now called
“Install macOS Catalina”.
By clicking to open the icon, we will confirm that the disk was created correctly.
This installation disc can be used to update your current operating system,
or to perform a complete installation, on a computer that does not have any
operating system.
With the computer turned off, insert the “Pendrive” with the “macOS Catalina” installation app.
Press and hold the “option” key on the keyboard, and turn on the computer to enter
the machine boot selection screen.
Select and connect to the available wireless network.
Click on the USB icon that contains the “macOS Catalina” installer app, and follow
the onscreen instructions.
Okay okay guys.
That's what I have for today.
I hope I've helped.
Thank you very much, and until next time.