Finally, the window appeared. No updates available. His Mac insisted that High Sierra was the latest and greatest.
"Are you sure you want to download macOS Catalina?" the prompt asked.
Open your web browser and navigate to the official Apple Support page for older macOS versions, or click the direct Mac App Store link for macOS Catalina. how to update macos high sierra 10136 to 1015
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.
Upgrade process (recommended steps)
Do not interrupt power or close the lid on a laptop.
Since Catalina is an older version of macOS, it may not show up in your regular "Software Update" pane in System Preferences. JustAnswer Finally, the window appeared
Ultimate Guide: How to Update macOS High Sierra 10.13.6 to macOS Catalina 10.15
Finally, the window appeared. No updates available. His Mac insisted that High Sierra was the latest and greatest.
"Are you sure you want to download macOS Catalina?" the prompt asked.
Open your web browser and navigate to the official Apple Support page for older macOS versions, or click the direct Mac App Store link for macOS Catalina.
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.
Upgrade process (recommended steps)
Do not interrupt power or close the lid on a laptop.
Since Catalina is an older version of macOS, it may not show up in your regular "Software Update" pane in System Preferences. JustAnswer
Ultimate Guide: How to Update macOS High Sierra 10.13.6 to macOS Catalina 10.15
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