One key to working with DOS is to understand the file system. This is not just about organizing files, though that is certainly a part of it, but also about keeping your system running smoothly and recovering lost files in some circumstances.


Links:

https://en.wikipedia.org/wiki/File_Allocation_Table
https://en.wikipedia.org/wiki/Disk_sector
https://en.wikipedia.org/wiki/Track_(disk_drive)
https://en.wikipedia.org/wiki/Data_cluster
https://en.wikipedia.org/wiki/File_system_fragmentation
https://en.wikipedia.org/wiki/Root_directory
https://www.ahuka.com/dos-lessons-for-self-study-purposes/dos-lesson-9-the-file-system/