I already found this github post with some pointers: https://github.com/dortania/OpenCore-Legacy-Patcher/issues/972#issuecomment-1046126535 Current situation: I had my internal disk with a GUID partition map, with 3 partitions: APFS for MacOS, NTFS for WIndows, and an Unknown 3rd partition of 471.9 MB (I guess this is the EFI partitions). Until I installed OCLP, i had MacOS and Windows in the boot menu when holding down the Options key at boot. After I installed OCLP and asked it to install itself on the internal disk, I now only have "Windows" as a label, which is actually the MacOS via OCLP (see above link) and no separate actual Windows, so I can't boot into Windows any more. Can a kind soul please outline some ELI5 steps to fix all this such that: - I can boot without any USB drive (install OCLP on the internal disk) - I get both MacOS and Windows in the boot menu via the Option key (and so I can actually boot into either MacOS or Windows) - Make the MacOS entry...