If this is not the case, you need to insert a startup floppy disk into the computer's floppy disk drive. In either case, the hard drive or floppy must contain the Operating System , found in the System Folder . Usually there is no need to do anything with these items. If there is anything that needs to be done to alter your system environment, you are instructed to remove or add something to the System Folder. When the computer starts up, it first runs a program found in the System Folder, named Finder.
Finder draws the icons, window and trash can and is essential to the file housekeeping that is done.
The Finder also understands the relationship between programs and the documents produced by them, to the extent that when you open a document, the Finder knows which program needs to be running and then opens it automatically. In general, the Finder is a program that is always running. One function of the operating system is to allow multiple programs to share the computer's memory. Once a program has been started, it becomes the dominant program, draws its menu bar and windows. Other active program's windows may or may not be still visible at this point, but they are still resident in the computer, inactive or running in the background, until they are specifically activated and then stopped via a quit command.