The version of macOS installed on your system also affects the systems firmware. So if you had Sierra or older (HFS+) on the system the OS won’t have the needed firmware update to allow the newer High Sierra and newer drive (APFS) to boot as it won’t understand the newer file system foundations or even access the drive.
Ideally you’ll need to create an external bootable OS installer USB thumb drive with a newer version of macOS. The last Apple supported version for this system is macOS Monterey (macOS 12).
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* [https://support.apple.com/en-us/102662|How to download and install macOS]
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* [https://support.apple.com/en-us/101578|Create a bootable installer for macOS]
The version of macOS installed on your system also affects the systems firmware. So if you had Sierra or older (HFS+) on the system the OS won’t have the needed firmware update to allow the newer High Sierra and newer drive (APFS) to boot as it won’t understand the newer file system foundations.
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The version of macOS installed on your system also affects the systems firmware. So if you had Sierra or older (HFS+) on the system the OS won’t have the needed firmware update to allow the newer High Sierra and newer drive (APFS) to boot as it won’t understand the newer file system foundations or even access the drive.
Ideally you’ll need to create an external bootable OS installer USB thumb drive with a newer version of macOS. The last Apple supported version for this system is macOS Monterey (macOS 12).
The version of macOS installed on your system also affects the systems firmware. So if you had Sierra or older (HFS+) on the system the OS won’t have the needed firmware update to allow the newer High Sierra and newer drive (APFS) to boot as it won’t understand the newer file system foundations.
Ideally you’ll need to create an external bootable OS installer USB thumb drive with a newer version of macOS. The last Apple supported version for this system is macOS Monterey (macOS 12).