Primary storage in a device is the place where all data is preferably stored by default. Although if it is found to be full , the data gets stored in the secondary storage memory.
Primary storage is usually the drive where the operating system is and the secondary storage is a additional drive for space.
Usually, Windows names it's primary drive as C:\
and all it's following...
Depending on the model you are using, it depends on what you mean. Typically, most models have primary storage as the Hard Drive (or now, Solid State drive may be as well), a type of nonvolatile...
Primary Means, it is individual there is no dependence, But Secondary will allays depends on Primary, If you want to do Secondary, you should complete primary first, There is no precondition to...