Exploring the Microsoft Windows filesystem
When you purchase a new storage device such as a hard disk drive (HDD) or solid state drive (SSD), the storage component is literally blank without anything on it. Imagine connecting a new HDD or SSD to your computer for the first time. Your computer will not recognize the storage drive and won't be able to write any data on it. Storage devices require a filesystem, which the operating system will use to organize how data is stored on the drive itself.
Imagine years ago, if you wanted to call your friend's landline telephone but did not know their number, you would have needed to use a traditional telephone directory. This was a large printed book containing publicly listed telephone numbers with the person's name and address. Think of a filesystem organizing files as a type of directory formatting. Hence, when a user or an operating system wants to locate a file, this task will be easier when using a filesystem on the storage...
