When you enable Configure > Options > Sharing > Map Mac Volumes To Virtual Machine for a Mac OS guest, the virtual volume "My Shared Files" is declared to Mac OS as case-insensitive. But the "Home" directory must be capitalized in paths, even though all other path elements are case-insensitive. To reproduce:
1. Execute this command in the guest's Terminal and observe the correct output when all elements of the path except Home are lower case:
% file "/volumes/my shared files/Home/desktop"
/volumes/my shared files/Home/desktop: directory
2. Execute this command in the guest's Terminal and observe the incorrect output when all elements of the path, including Home, are lower case:
% file "/volumes/my shared files/home/desktop"
/volumes/my shared files/home/desktop: cannot open `/volumes/my shared files/home/desktop' (No such file or directory)
Tested on Parallels 26.1.1, Host Mac OS 15.7.1 / Apple M2 Max, Guest Mac OS 15.6.1.