Disk First Aid is a free software utility made by which organzation, that was bundled with all computers running the classic Mac OS, this tool verifies and repairs a limited number of directory structure problems on any HFS or HFS Plus hard disk or volume?
Disk First Aid: Disk First Aid is a free software utility made by Apple Inc. that was bundled with all computers running the classic Mac OS. HFS Plus: HFS Plus or HFS+ is a file system developed by Apple Inc. It served as the primary file system of macOS.
Apple Inc.