hey folks today i'm going to teach you how to reinstall the operating system on your mac
that's coming up next on tech talk america
hey folks and welcome to the class there are a few different ways that you can reinstall the
operating system on your mac the good news is it's really easy but the best method for you
depends on your setup all the different methods that we're going to be going over today will
safely reinstall the operating system so that your data is preserved now that being said it's always
a good idea to have a backup before proceeding and keep in mind reinstalling the operating system
won't help if your mac is experiencing hardware failure so here's how this video is going to work
you remember those adventure books when you were a kid well this video is about to feel like one in
a moment i'm going to describe four types of mac setups then you're going to fast forward to the
time code that i'll flash on the screen you ready let's begin if you're on any type of mac laptop
with an intel chip skip ahead to that time code if you own an intel based imac mac mini or mac pro
and you do not have a way to plug your keyboard into your mac skip ahead to that time code if you
own an intel based imac mac mini or mac pro with a wired keyboard or if you have a wireless keyboard
that you are able to plug into your computer and by that i'm referring to the one that comes with
some of the more recent models which you'll see pictured here skip ahead once again to that time
code if you own any mac with apple silicon skip ahead to that time code hey group one the first
thing you need to do is shut down your mac after it's completely powered off you're gonna press and
release the power button and then immediately hold down one of the three following combinations of
keys if you hold down command and the r key that will reinstall the latest version of mac os that
is presently installed on your computer now please note that does not mean it's up to date it's just
the same version that you've been running if you hold down option command and the r key that will
upgrade your mac to the latest version of mac os if you hold down shift option command r that will
reinstall the operating system that originally came with your mac or the closest version that's
still available if you're not sure which of those three to go with my recommendation is that you go
with good old command r now you'll need to hold those two keys down until you see the apple logo
with the progress bar at this point you may be asked to enter in the administrator password to
your computer and then you'll be brought here to the utility screen now just follow the prompts
and you're good to go the reinstallation process takes somewhere around an hour
depending on what type of mac you're using be sure to click the like button and thanks for watching
hey group 2 how are you no way to plug your keyboard into your mac no problem you've got two
options now forgive me i can't completely simulate this first solution because it only works on older
operating systems so i'm going to show you part of this and i'll verbalize the last couple of steps
if you go to the apple icon at the top left then go into system preferences then you can click on
startup disk you'll notice on my screen it only says macintosh hd but on yours you may see a
second partition that contains the installer select that partition and click restart it
basically walks you through the entire rest of the installation if you're on a mac that is running an
older operating system i'll include a link in the video description to this page on apple support's
website from here you'll find links where you can download older operating systems dating all
the way back to yosemite heads up if you live outside of the us you'll need to scroll down to
the bottom and change the region to your country before clicking those links once the operating
system is downloaded it automatically launches and walks you through the entire installation process
if you own one of the newer macs that comes with one of the apple silicon chips including m1 or m2
here's how you can reinstall the operating system first you'll need to shut down your computer then
after it's totally turned off you'll need to press and hold the power button don't let go until you
see this screen where it'll show you macintosh hd and options select options and press continue
you should now get an apple logo with the progress bar and after a moment or two you'll see the mac
os utility screen click on reinstall mac os follow the prompts and you're good to go thank
you so much for watching everyone this is david a cox with tech talk america class dismissed