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- Your Mac's Specs
- MBP 16" 2023 (M3 Pro), iPhone 15 Pro, plus ATVs, AWatch, MacMinis (multiple)
Also, you can follow these directions to reinstall the OS:
If there is no Recovery on the drive (and there probably is not), use the Internet Recovery process. That will put on the machine the version it came with originally. At least then it's bootable and from there you can upgrade to what you want. If you decide to go the Internet Recovery route, you don't need to format the drive in advance as you will have the opportunity to do so after the Recovery system is downloaded from Apple and run.
How to reinstall macOS
You can use macOS Recovery to reinstall the Mac operating system (macOS) Reinstalling macOS doesn't remove your personal data.
support.apple.com
If there is no Recovery on the drive (and there probably is not), use the Internet Recovery process. That will put on the machine the version it came with originally. At least then it's bootable and from there you can upgrade to what you want. If you decide to go the Internet Recovery route, you don't need to format the drive in advance as you will have the opportunity to do so after the Recovery system is downloaded from Apple and run.