In this article, I am going to show you how to install macOS Catalina on VMware on Windows. So, Apple announced macOS Catalina in WWDC 2019. If you want to give macOS Catalina a try, then you’re in the right place. Oct 02, 2021 What’s more, if you have an SSD, it is highly encouraged to use it because SSD is considerably quicker than mechanical hard disk (HDD), and macOS operate on SSD really smooth. Anyhow, it isn’t 100% mandatory, but in case you don’t be afraid to utilize it. Steps to install/reinstall a fresh version of Catalina/Big Sur. OK, this is crazy, I had just installed Catalina and wiped everything out to start from scratch and only a couple months into my new install, it was doing some bizarre stuff that I had never seen before. I have a 250G SSD disk drive and doing a df to show the disk usage shows this. Answer (1 of 6): Warning: this answer assumes you sort of know what you are doing. There is a risk of data loss if you don't. If the SSD is already built into the Mac: 1.