Clean Install MacOS Catalina on any Mac

The clean install process is easy.

In the video we will show you how to do a clean install of MacOS Catalina on any Mac.
In a previous video I showed you how to create a MacOS Catalina installer USB and I here is the link. Create MacOS Installer Drive.

Once you have followed that video and created your USB we can now show you how to do a clean install on any Mac.

One more thing to mention your USB can be USB type A or USB type C it doesn’t matter which one. If you want to buy one similar to what I am using here’s the link.

🔥 Do you want a USB drive like the one in the video? Click here. https://amzn.to/2NqJI5k

Step 1 – Clean Install MacOS

Go ahead and shutdown your Mac. Apple Menu > Shut Down and Select Shutdown again. Next plug in your MacOS Catalina USB. Press and hold your Alt Option Key on your Keyboard and press your power button to turn your Mac on.

You should then see the Boot menu with Install macOS Catalina, use the arrow keys and select Mac OS Catalina drive. Press return on your keyboard.

It will eventually boot you into the macOS Utilities menu. If you want to Upgrade or Install a new copy of macOS, select the install macOS option. I want to show you a clean install so I am going to wipe the hard drive first. Click Disk Utility.

Clean Install MacOS
Disk Utility a program to help you format your hard disk before installing MacOS Catalina.

Step 2 – Disk Utility

When you are in Disk Utility, select your Internal Hard drive in the top left hand corner and press partition. Press partition again. Give your partition an Name in this case I will call it Mac HD. Under format you can select APFS or if you have an older drive Mac OS Extended (Journaled).Click Apply and click Partition. When you have done that go back up to Disk Utility menu and Quit Disk Utility.

Alright you have wiped your hard drive and now you are about to do a clean install of macOS. Select install macOS. Click continue. Agree to the terms. Select Mac HD and then click install.

So by now you Mac would have rebooted and you should get the Welcome screen where you select the country you are from. You have now done a clean install of macOS Catalina and you can just go through all the mac setup prompts, similar to when you first purchased your mac.

Ok Guys, Don’t forget to check out my other videos.

Create macOS Catalina USB Installer Drive

Share files iPhone to Mac with AirDrop

Must have iPhone & Android Accessories

Install Windows 8.1 Enterprise on a MacBook Air OS X Yosemite

This video will show you how to Install Windows 8.1 Enterprise on a MacBook Air OS X Yosemite.

Hi All,
I setup this video to show people how to Install Windows 8.1 Enterprise on a MacBook Air OS X Yosemite. You need to know how to install Windows 8.1 Enterprise to allow you to then setup Windows to Go. Windows to Go is installing Windows 8.1 on an external USB drive rather than installing it to the computers built in hard drive.
You need to have a copy of Windows 8.1 Enterprise install on a Mac or a PC to allow you to setup the Windows to Go USB drive and I will do the next video on exactly how to do this.
So this video is in actual fact one step closer to setting up Windows to Go.

If you want to know more about the Windows to Go process you can check out the official Microsoft page here.
And for the techies out there, you can take a look at the TechNet version here.
So where do I get Windows 8.1 Enterprise version from I here you ask? Well you can follow the 123myIT.com video here. On the downloads page you will have a choice of Windows 8.1 or Windows 10 Enterprise version. For the Windows to go setup it probably doesn’t matter a whole lot which version you choose.

Windows 8.1 Enterprise on a MacBook

Once you have downloaded the Windows 8.1 Enterprise version, you can burn that ISO to a DVD and then install it either on a Mac or PC. Burning the copy to DVD allows you to install any computer but it also allows you to make sure you have a back up copy if anything does happen to the ISO file or to the computer that the ISO file is stored on.

Subscribe to the 123myIT.com YouTube channel to keep up to date with the latest 123myIT.com videos. Click here.

How to do a Clean Install of OS X Yosemite from USB

This video will show you how to do a clean install of OS X Yosemite from USB.

Hi All
I have had a few people from the 123myIT YouTube channel ask me how to Fix GPT Error: Windows cannot be installed to this disk.

If you have followed the video linked above and still having some problems getting Windows installed on your Mac because of the GPT partition it is probably best to do a clean install of OS X Yosemite and this video will help you achieve this.

You will need to Create a bootable OS X Yosemite installer USB drive, this drive will install OS X Yosemite on to your Mac.

Clean Install of OS X Yosemite

Make sure you back up your Mac with Time Machine, because the OS X install will remove any data you have on the Mac hard drive. Once you have everything backed up use the newly created USB drive to do Clean Install of OS X Yosemite.

Boot into the USB driver and format the Mac hard drive with Disk Utility. At this stage all of your data with be removed from the Mac hard drive and you can then proceed with the install. Doing a clean install of OS X Yosemite will take around 30 mins to 45 mins depending on the speed of your Mac hardware. Your Mac will also restart a few time during this stage. Just let it do its thing. Once the Mac OS X Yosemite has been installed you will need to setup the Mac as if it is a new Mac. So you will need to choose a user name a password, choose time zone and location.

If you want to know more about the OS X Yosemite you can find more info on the official Apple web page here.

Fix GPT Error: Windows cannot be installed to this disk

This video & article will show you how to Fix Error: Windows cannot be installed to this disk. The selected disk is of the GPT partition style.

The old GPT partition style error! Must be close to the most frustrating and annoying errors I have encountered in my time working with Mac.
In this video on how to Fix GPT Error: Windows cannot be installed to this disk error message, I explain a few different ways to try and fix this error. However lets talk about the possible root cause of the error.

Most people myself included get this error when trying to install Windows on a Mac and seems to be caused by the hard drive not being configured for UEFI mode. If your Mac or PC is UEFI-based then to install Windows your hard drive must be set up as UEFI mode or legacy BIOS-compatibility mode.

GPT Error Message

If you want to know more information on this issue then you can the Microsoft reference on this link.
Windows Setup: Installing using the MBR or GPT partition style

For example, if you receive the error message: “Windows cannot be installed to this disk. The selected disk is not of the GPT partition style”, it’s because your PC is booted in UEFI mode, but your hard drive is not configured for UEFI mode. You’ve got a few options:

1. Reboot the PC in legacy BIOS-compatibility mode. This option lets you keep the existing partition style. For more info, see Boot to UEFI Mode or Legacy BIOS mode.

2. Reformat the drive for UEFI by using the GPT partition style. This option lets you use the PC’s UEFI firmware features.

You can do this yourself by reformatting the drive using the instructions below, or if you need to preserve the data, use a third-party utility to convert the drive to GPT format.

Ok so how do you fix it? Well you can try the options mentioned in the video, however I have found the best way to fix the issue was to backup my data in OS X.

Then do a Clean install of OS X.

And then try the boot camp process again from scratch. This process should sort out your hard drive partition type and resolve the issues with Windows not installing correctly on the disk.

Install Windows 8.1 on a Macbook Air no DVD drive

This video will show you how to Install Windows 8.1 on a MacBook Air without a DVD drive.

Hi All,
In this article you will find the steps, on how to install Windows 8.1 on a MacBook Air and any Mac without DVD drive.
This process was done on MacBook Air 2013 model and we will also use an ISO file or DVD image rather then a an actual DVD.

If you are looking for the video How to install Windows 8.1 on a Mac running OS X Mavericks you can find it here.
This video will show you how to install Windows 8.1 with a DVD.

What will you need to make this happen?
1. MacBook
2. 8GB USB stick or higher
3. Windows 8.1 ISO file, you can find a copy on the 123myIT download page here
Or you buy a full version of Windows 8.1 recommended under the 123myIT.com Store.

4. Once you have done the above, the next step is to run the Boot Camp Assistant. You can do this by going into finder and the type boot camp, or click the Desktop then click on Go, and then select utilities Boot Camp Assistant.
Boot Camp Assistant

5. Once you have this started up simply follow the video above and pretty soon you will have Windows 8.1 up and running on your MacBook Air.

6. If you are having problems during setup where you can move your mouse or type anything on the keyboard, you can try plugging in a USB keyboard and mouse for the initial setup, and then after Windows is installed go to the Boot Camp Drivers page here and download the correct drivers for your model of Mac which should solve this problem.

NOTE: Key points to remember, if your Mac doesn’t boot into the Windows installer screen then you can find the boot menu by restarting the Mac and holding down the ALT or option key.
For more information you can check out the Official Apple Boot Camp page here.

How to Reset the SMC System Management Controller on a Macbook Pro Macbook and Macbook Air

This video will show you how to Reset the SMC System Management Controller on a Macbook Pro Macbook and Macbook Air.

Apple have said

Note: It is possible that the SMC could encounter an issue that may cause unusual system behavior typically related to the symptoms described below. In some cases, resetting the SMC may be the only correct method to resolve the issue, however, an SMC reset should only be attempted after all other standard troubleshooting has been performed.

You should try the following steps before you reset the SMC on your Mac and test the issue after each troubleshooting step and see if the issue still occurs.

Step 1. Press the Command, Option and Escape to quit any application that might not be working properly.
Step 2. Put the Mac in sleep mode by selecting the Apple menu button in the upper-left menu bar and choose Sleep. Wake the Mac after it goes to sleep.
Step 3. Restart the Mac by going into the Apple menu and choose Shut Down.
Step 4. Shut down the computer by going into the Apple Menu and choose Shut Down.

Sometimes your Mac might appear to be running normally but it doesn’t seem to be responding, you can force the Mac to shut down by pressing and holding the power button for 10 seconds.
NOTE: Any unsaved work will be lost.