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30 Σεπ 2024 · You can use macOS Recovery, your computer's built-in recovery system, to reinstall the Mac operating system. Reinstalling macOS doesn't remove your personal data.
19 Αυγ 2015 · From the quoted KB "If you use Internet Recovery to reinstall OS X, it installs the version of OS X that originally came with your computer. After installation is finished, use the Mac App Store to install related updates or later versions of OS X that you have previously purchased."
Erase and reinstall macOS on an Intel-based Mac without the Apple T2 Security Chip. You can use macOS Recovery, the built-in recovery system on your Mac, to erase and reinstall macOS.
16 Σεπ 2024 · You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful if you want to install macOS on multiple computers without downloading the installer each time, or if you can't install a compatible macOS from the Finder or macOS Recovery.
30 Απρ 2023 · Option 1: Factory Reset Your Mac. Option 2: Wipe and Reinstall macOS from Scratch. Enjoy Your Squeaky Clean Mac. Key Takeaways. To wipe a modern Mac with Apple Silicon or T2 Security Chip, open System Settings > General > Transfer or Reset and click "Erase All Content and Settings" to open the Erase Assistant.
How to reinstall macOS from macOS Recovery — Apple Support. Learn how to reinstall the operating system on your Mac, using macOS Recovery. To learn more about this topic, visit...
Without the disk there is no way to reinstall. Maybe apple can get you a replacement or you can take it to the genuis bar. – Daisetsu. Jan 3, 2011 at 22:27. any suggestions with how to improve performance then? – RSM. Jan 3, 2011 at 22:28. 2. Create a new user account in System Preferences. If that one is also slow, it's a system/hardware issue.
