How To Update Macos High Sierra 10.13.6 To 10.15 ~upd~ -

Apple menu → System Preferences → Software Update → install any available updates (final version is 10.15.7 with security updates through mid-2022).

Go to > System Report > Software > Applications .

is a significant transition that modernizes your Mac but requires careful preparation, especially regarding application compatibility. Apple Support Community The Verdict Performance how to update macos high sierra 10.13.6 to 10.15

First, confirm your Mac is on the official compatibility list: : 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 2. Pre-Upgrade Checklist

Before upgrading to macOS 10.15, it's essential to prepare your Mac for the update. Here are some steps to take: Apple menu → System Preferences → Software Update

Instead, consider staying on High Sierra but switching to a security-focused browser (like Firefox ESR) or upgrading your hardware. Catalina is dead software; Apple stopped supporting it in 2022. If you want real security, you need macOS Monterey (12) or newer.

| Issue | Possible Solution | |--------|--------------------| | “This copy of the Install macOS Catalina application is damaged” | Set date back manually via terminal: date 010100002020 (then rerun installer). | | Insufficient disk space error | Free up space by deleting caches, old iOS backups, large unused apps. | | Installer hangs at “less than a minute remaining” | Wait up to 1 hour; if still stuck, restart and re-run installer from Recovery Mode. | | 32-bit app won’t open | App must be replaced with a 64-bit version or abandoned. No workaround exists. | Catalina is dead software; Apple stopped supporting it

: Includes Find My (which works even if the Mac is offline) and Activation Lock for Macs with the Apple T2 Security Chip.

A Time Machine backup can be used to restore your system if anything goes wrong during the upgrade. For additional security, consider using a cloud backup service or manually copying your most critical files to another drive.