Handy disk image tool is to be removed from macOS

In future releases of macOS, Mac users will no longer be able to format or eject disk images using the very long-standing Terminal command, "hdiutil." It won't affect many users directly, but it will break disk repair utility apps.
The new deprecation notice in Terminal for the command hdiutil.
You may never have even heard of it, but since the earliest days of Mac OS X, the Terminal has included the command now called "hdiutil." It's a tool for handling disk images, and AppleInsider forum users