macOS Catalina is Apple’s shiny new operating system for the Mac and it’s got a ton of great features and improvements. You’re probably keen to get started and install it straight away. Before you do, consider whether you want to install it over the top of your current OS, or as a completely clean install of macOS Catalina. The benefits of the latter are that it will be like a completely new Mac, with all your settings wiped out, and junk files gone. It should make your Mac run faster. The rest of this article will explain how to clean install macOS Catalina.
Before the clean installation of macOS 10.15 Catalina it’s recommended that you first delete junk and dusty files from the current macOS. There are many free and paid tools to clean junk but the quickest option is to run CleanMyMac X. You can expect to free up tens of gigabytes of space, including old apps, and their leftovers.
Here’s how it works.
I mean, it as easy as visiting the Mac App Store and downloading the OS like you would have downloaded any other application. But so that you can be sure, here is the process. On your Mac, download macOS Catalina 10.15.2 with this link. Then click on “Get” button. The files will then be downloaded to your computer automatically. Oct 11, 2019 So recently installed the latest Catalina beta public 4 onto a separate drive just to explore and test out. Loving the OS so far, and while I will miss iTunes, the new change will be interesting. I'm having trouble importing my iTunes library though. Apparently an upgrade from Mojave will. I mean, it as easy as visiting the Mac App Store and downloading the OS like you would have downloaded any other application. But so that you can be sure, here is the process. On your Mac, download macOS Catalina 10.15.2 with this link. Then click on “Get” button. The files will then be downloaded to your computer automatically.
I can’t stress how important this is. You must backup your Mac before you do anything else. You’re going to be erasing your startup drive completely, so you need a complete backup of everything. You can use Time Machine, another backup app, or a cloning tool. Just make sure you have a complete, preferably bootable, copy of your current installation.
You should also make notes of settings for apps you use regularly – screen grabbing them is a good way to do that. And you should make sure you have a copy of any licence codes that you’ll need when you reinstall applications. You can use Apple’s Notes app to make notes, as long as you sync them with iCloud.
If you’re reading this after Catalina ships, you can download it from the Mac App Store and then choose Quit when the installation starts. If you’re clean installing the beta (and, by the way, that’s not something I would recommend. It’s much better to create a dual boot system when you run the beta.
sudo /Applications/Install macOS Catalina Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install macOS Catalina Beta.app
where ‘Untitled’ is the name of your USB stick or external hard driveOnce you see ‘Done’ in Terminal you can quit it. Your USB stick or external hard drive is now a bootable Catalina installer, so keep it safe. Now, it’s time to clean install macOS Catalina.
Now you've made a backup and created a bootable installer, it's time to actually install the new macOS. Follow these easy steps to clean install macOS Catalina on your Mac.
Once you’ve set up your Mac, you can eject the installer disk and remove it. Remember to keep it safe. You can now restore files you backed up earlier from Time Machine or whichever backup tool you used. Remember to restore files and folders individually, don’t, for example, restore your entire user directory otherwise you’ll copy back all the junk files you just got rid of. Reinstall applications and go through them adding license details where necessary. Check that everything works as you expect it to and use the screen shots you made earlier to configure settings.
I am answering my own question.I spent several days looking at logs from ssh -v -X user@hostname, with -vv and -vvv for more log info. Hence my question: 'mac osx 10.4.11 with x11 1.1.3 (XFree86 4.4.0) - is this compatible to do X-forwarding from Mac OS 10.13.6?' .Any comments will be much appreciated.
There are lots of good reasons why you might want to clean install macOS Catalina, but the most important one is that it should make your Mac feel like new and keep it running smoothly. For ultimate Mac refresh you can also download CleanMyMac X and play with its cleanup tools. Getting rid of old junk feels great.
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