You need a minimum of 12.5 GB of available storage if upgrading from High Sierra. Apple recommends keeping up to 20 GB free to prevent installation stalls. Memory: At least 4 GB of RAM is required.
Use Time Machine to backup your entire system to an external drive. If something goes wrong, you can restore your files. how to update macos high sierra 10136 to 1015
However, if you have a 2014+ Mac with an SSD, – it is faster, more secure, and supports modern browsers longer. You need a minimum of 12
. Your hardware must be one of the following to run Catalina officially: : Early 2015 or newer MacBook Air : Mid 2012 or newer MacBook Pro : Mid 2012 or newer : Late 2012 or newer : Late 2012 or newer : All models (2017) : Late 2013 or newer Apple Support Community 2. Prepare Your Mac Backup Data Time Machine Use Time Machine to backup your entire system
If an app is 32-bit, you will need to find a newer version from the developer or an alternative app.
Although you're already running High Sierra, not all models that run High Sierra are officially compatible with Catalina. Check your model against the list below.
If you want to make sure your machine is running perfectly post-update,I can guide you on optimizing your system settings for Catalina or help you find 64-bit alternatives for your favorite apps!