Before downloading, verify that your Mac model is officially supported by Apple for macOS Catalina: : Early 2015 or newer MacBook Air : Mid 2012 or newer MacBook Pro : Mid 2012 or newer Mac mini : Late 2012 or newer iMac : Late 2012 or newer iMac Pro : 2017 Mac Pro : Late 2013 or newer
Catalina requires at least , but 30–40 GB is safer. how to update macos high sierra 10136 to 1015
"Are you sure you want to download macOS Catalina?" the prompt asked. Before downloading, verify that your Mac model is
Once the installer downloads, it will launch automatically. Follow the prompts. Note that your Mac will restart several times. If you are upgrading from High Sierra on a spinning Hard Drive (HDD) to an SSD file system (APFS), the installation process may take significantly longer than usual. Follow the prompts
