To be honest, it was my first time reinstalling an operating system on a Mac. In the past, I always just download the update from the App Store and followed the prompts and voila! New OS. However, I wanted to do a fresh install on my Mac and decided it was time to venture into the unknown. After all, if I messed up badly enough, the iStore could help me out :)
I followed the step on my previous blog post and created a bootable Sierra OS flash drive. I restarted my laptop and began my adventure. I started out by reformatting my hard drive. And then the fun began. I then attempted to install onto the clean hard drive. I got the following error message:
"A GUID Partition Table (GPT) partitioning scheme is required".
No problem, I go back into the disk utility and then.. the option isn't there. I reformat again. Same error, same no option available issue. I did this about 5 times.
So here's how I fixed it:
Go into the disk utility
Select the hard drive you want to install onto
Click "First Aid"
Let it run
Then when you go to reformat, now you have an option to select a scheme.
Select the Guid partition map as your scheme
And now you can carry on your merry way.
Hope it helped.
In a world where we're trying to become more secure, sometimes tech companies tend to go a little too far and it can be annoying when they take way the option to do what you want at your own peril. I don't always buy apps off the Apple App Store. Before, you'd just say allow this Mac to download and install any app. Now, that option is gone and is replaced with this:
Mac app store
OR Mac App Store and identified developers.
This means that if Apple doesn't recognize the app, you now get this message:
How lovely.
I downloaded a few free apps and, sure enough, they all had the same message.
Gatekeeper is the culprit and I'm going to take it down! By doing this, obviously there are security risks blah blah do this at your own risk blah blah.
Go to terminal
Copy and paste this magical code: sudo spctl --master-disable
Put in your computer password when it asks for it and click enter on your keyboard.
Ta-da! You can now install the apps you want on your own laptop.
