What if it says macOS Monterey cannot be installed on Macintosh HD
Trying to update my computer so it will work better and it says macOS Monterey cannot be installed on Macintosh HD
MacBook Pro 13″, macOS 11.6
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There are reports appearing on the ASC Forums regarding failed installation of Monterey on older Qualifying Apple Computers. In most cases this is related to having a NON Apple Original internal drive ?
The EFI Boot ROM included in Monterey is verifying for Original Apple Drive and if not found , may Balk or fail to upgrade to Monterey.
Reports indicate the EFI BOOT ROM is Required to Flash the Computer and is a requirement for a Successful Monterey Installation.
If above applies - solution is to put the Original Apple Drive or an Apple Approve Drive back in the machine and run the installer pointing to the Original Apple Drive. This may allow the bundled EFI Boot ROM within Monterey to Flash the computer. Then switch out the drive and replace with the desired drive and Run the Monterey Installer again to the After Market Drive.
