
So it’s probably best to start this, and then go off and do something else.

The size of the installation file is 5GB in total. Second, it took me 45 minutes to get the whole file, and I am on a fast Internet connection. To confirm you still want the file, click “continue” and the download will start. It is basically asking you “what the hell do you need the Sierra installation file for again?”. You will therefore get a box where you have to confirm you want the file. I was redirected to the German page since that’s where I am, but you will be redirected to the page of your own country.Īt this point, you need to be aware of two things.įirst, your Mac will get itself a bit worked up, because you are already running Sierra (hopefully). Now click “Download” to start the Sierra installation. This should open up your Mac App Store, but if not, click on “View In Mac App Store” to give the Mac store a nudge. Step 2 – Get The MacOS Operating System #ĭownload the MacOS installation file. For the purposes of speed, you should also get a proper USB 3.0 stick, and not use some crappy little 2.0 stick that will crawl along at a snail’s pace.Īlso, transfer any existing critical files off the stick, because when Sierra jumps on there, everything else is going to get nuked. Make sure you have a blank USB stick, and that it has a minimum of 8GB space. Bootable MacOS Installer Recipe # Ingredients #ġ USB stick, with minimum 8GB space (blank) MacOS Installation File (Currently Sierra) Disk Creator Time & patience Step 1 – Get a Blank USB Stick #

Then you can have it sitting by the computer standing by, just in case. The answer is to make a bootable installer on a USB stick, and it really isn’t difficult in the slightest, as I will now show you. If you are forced to wipe your entire Mac hard-drive, what’s the easiest way to get a hold of a fresh copy of MacOS and do a clean install? But this only solves part of the problem.

You should be keeping constant backups using Time Machine (or even better, relying on offsite backups as well).
