Apple Deprecates hdiutil in macOS 27, Breaking Longtime Scripts

hdiutil is deprecated in macOS 27 Golden Gate

In macOS 27 Golden Gate, Apple has deprecated the command-line tool hdiutil, directing users to diskutil image instead. Developer Jeff Johnson tests the replacement, finding it faster and producing smaller disk images, but it lacks some hdiutil options, fails on permission errors without explanation, and doesn't include a scrub option. Johnson warns that deprecation could break apps like Knox that rely on hdiutil, and notes that a persistent bug with .bnnsir files remains unfixed.