Hi guys and welcome to 123myIT. In this video, we will show you how fix the error this copy of the Install Mac OS application is damaged and it will also fix the error OS X could not be installed on your computer.
Upgrading your Mac – Install MacOS Application is Damaged
Guys if you are upgrading Mac OS or trying to do a clean install from USB you might encounter the error messages I just mentioned and the fix is easy. Open up a web browser and go to Google and do a search for the release data of the Mac OS you are trying to install. In my case its macOS High Sierra.
As you can see hear the release date for High Sierra was September 25 2017. So to get the macOS installer to work you will need to change the time on your computers clock.
Open up the Date & Time on your Mac and unlock it with your Admin password. Once you have unlocked it take the tick out of Set date and time automatically. Set your time back to just after the release date of the version of MacOS you are trying to install. So for me iam going to set my data to October 2017. This tricks the installer file to thinking the date is 2017 and will install MacOS on your computer. Watch and see what happens now when I go to run the installer.
There you go the error is gone and the MacOS will continue to install. The Install MacOS Application is Damaged error is fixed.
Guys don’t forget to check out my other videos such as how to do a Clean install of MacOS Big Sur. And do me a favour if you know anyone who might need this video please share it will them, hit the subscribe button and smash the bell icon.
Hi guys and welcome to 123 my IT’s video on how to create an MacOS Sierra Install USB.
Ok guys recently I did a video on how to download Mac OS Sierra and to see that video you can find it on the following link. How to download Mac OS Sierra.
That video shows you how to download this app and now the next step is to show you how to actually create a MacOS Sierra Install USB from this app. So the USB thumb drive has to be a minimum of 8 gigabytes in size for you install the OS X Sierra software on the USB and then you can do a fresh install of Mac OS Sierra from this use to any Mac.
Lets for example say you wanted to sell your old Mac or you had a problem with your Mac like you had a virus on there any need to do a fresh install. You can use this USB to format the Mac and install a fresh copy of OS X.
So the first step you will need to do is format the USB and you can do this by plugging your USB thumb drive and then go to go in the Apple menu and then go down to disk utilities.
Click on the USB that you want to format and make sure it’s set to Mac OS X extended journaled and keep it as untitled for now you can change this around but if you change this around you have to actually change the untitled part in the code there so let’s just leave it as untitled for now.
Make sure you have no important data on the USB because the next step will delete any data that was on the USB.
Once you have done this just click erase and then erase again. The USB will disappear and it will start to format the USB.
The next step is to download the install disc creator app you can get the install disc creator app from the 123myIT.com website, under downloads or simply click the link here.
Open up the install disc creator you will need to select the untitled USB from the drop-down menu. Make sure the OS X Sierra app is selected below then click create installer button. You may be prompted for a password this will be the administrator password type in the password and then click ok. This process can take about 5 to 10 minutes depending on the speed of your Mac.
To do this same process with the terminal code copy the terminal code below then open up a terminal Window by going to finder and then type terminal and then hit return.
Simply right click and paste the command into the terminal window, press return again and you will be prompted for your administrator password type in your administrator password.
if successful you should see the terminal window start to erase the USB and copying installer files to the disc. Once this is done you should be able to then use the USB to do a clean install of any Mac.
I hope that helps guys ! 🙂
This video and article will show you how to download MacOS Sierra, which can be used at a later date to install on any Apple Mac computer.
Why would you want to download a copy of OS X Sierra? When you have an offline copy that means you can then install it on any Mac, so let’s say you wanted to sell your Mac wipe all the data that was on the local hard drive before you sold it you can go through it and reinstall the operating system with macOS Sierra.
Another good thing about having the offline copy is you can actually install it on other Mac’s, also Apple tends to update this software once a year so if you don’t download a copy at some stage and you wanted to reinstall this particular version of macOS you won’t be able to.
So to download macOS Sierra it’s straightforward all you need to do is open Safari and then go to the Apple website. Or you can use this link as a quick link. http://www.apple.com/macos/sierra/
You should then have a download or upgrade button. Click that and download the macOS Sierra app.
Once downloaded you should see the macOS Sierra app in the Applications menu. This is good news because you now have a copy of the software and its ready to be installed on to a USB.
I will do a video of how to install macOS Sierra on USB too shortly, but basically if you wanted to install this on the USB lets say you had some problem with your Mac any wanted to do a fresh install, maybe it got a virus or something like that.
What you can do is follow my video will be on the 123myit.com website on how to extract this and put it onto a USB and then I’ll show you how to basically reload a Mac with a clean install with the new version of Mac OS X Sierra.
This video will show you how to create an OS X El Capitan Installer USB.
We previously showed 123myIT users how to create an OS X Yosemite and Mavericks USB drive. And we have the video on how to create an OS X El Capitan installer USB. The process is very simular to the other OS X installer videos that we have done in the past. There is a few code changes so just be aware of that.
Again you will need a computer running Mac OS X and you will also need a 8GB or larger USB drive. In this video I didn’t take any chances and I use a 16GB USB drive, which are quite cheap to buy these days.
Copy and paste the code into a Terminal window and press enter, you will be prompted for a user name and password. This should be your Admin accounts user name and password. Remember to change the name of your USB device to ElCapInstaller if you miss this step the code will error out with something like incorrect syntax error. 🙂
You should see the name of the USB change from whatever its called when you plug the USB in to Install OS X El Capitan. Once this has completed you should then be able to use the USB drive to do clean installs of OS X on almost any Mac hardware or computer. Its always helpful to keep a back up of OS X versions. Because if you ever want to go back a version or install OS X on a different Mac its good to have this backed up copy. Also Apple updates their OS X software once a year and then makes their old version unavailable. So to save yourself getting caught out this way the USB is a great step.
In the next video I will show you how to do a clean install this OS X El Capitan Installer that you have just created.
This video will show you how to Download OS X OS X El Capitan.
Some people love it, some people hate it, some people can’t notice any difference between Apple’s latest version of OS X El Capitan and the earlier version Yosemite.
So what are the differences you might ask?
Lets give you a quick run down.
* Split View – Allows you to have two apps open on the one screen “Something Windows has been doing for a while now” 🙂
* Mission Control – Allows you to see all the Windows open at the same time on one screen.
* Call out you cursor – This is a funny one, I was doing the video Download OS X El Capitan I move the mouse quite quickly and the mouse went massive. See the picture below.
So from what I can so mostly is little changes, nothing that I would consider really life changing additions to the operating system. More like little updates.
In this video however we will show you how to download OS X El Capitan so that we can use it to create an OS X OS X El Capitan USB installer drive. The benefits of this is that if you ever want to roll back to a version of OS X that may have run better on your Mac you can do this quite easily by doing a clean install.
You will need a Mac to download the software as well as an iTunes account user name and password. However once you have a copy of the OS X file you can copy that to a Windows computer if you wish.
Once the file is downloaded, simply copy it to the desktop and shortly I will put another video up on how you can make a USB installer drive from this file.