I am using Macbook Air. And after install win10, I want to resize Window Partition and create a new partition to use data. after that, windows inform me a recovery error can not boot to windows. And I reinstall windows again. Then after I can enter to Window desktop, bootcamp inform me that " could not locate MacOS volume" Then I meet this error. the option to boot to macOS was disappeared, only windows. Then I use DiskUtil to check. The MacOS volume partion get the partition type as "unknown" please help me. i dont want to lose all data in MacOS