
I then pressed 'Backup' and the Testdisk interface rearranged the information.

When I ran Testdisk, it indicated that MS Reserved, EasyRE seems to now overlap the EFI System. I attempted then to repair Windows Boot with various software (including EasyRE), but nothing was resolved.Īccording to Terminal DiskUtil List dev/disk0 (seems EFI system is missing) Windows on the bootcamp side failed after a power cut a year ago. A GUID Partition table partitioning scheme is required." The message: "macOS could not be installed on your computer. I recently wanted to update my iMac (High Sierra, late 2012) and this failed.
