Upgrading your Mac from macOS High Sierra (10.13.6) to macOS Catalina (10.15) is a major step that modernizes your system while introducing critical changes, such as the complete transition to 64-bit applications. Step 1: Verify Hardware Compatibility
Finally, the download finished, and the macOS Catalina Installer window popped up automatically. It asked him to choose a disk to install. He selected his Macintosh HD. how to update macos high sierra 10136 to 1015
1. The Backup (Crucial Step) Before any major OS upgrade, use Time Machine to back up your data to an external drive. Updates can fail, and data loss is a real risk. Upgrading your Mac from macOS High Sierra (10
The desktop loaded. It looked cleaner, brighter. He clicked the Apple logo once more. Backup:
What’s different in Catalina?