1. What are the disadvantages of storing all parts of the operating system in a read only memory ( if we utilize a large ROM), instead of storing the BIOS  only?

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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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1. What are the disadvantages of storing all parts of the operating system in a read only memory ( if we utilize a large ROM), instead of storing the BIOS  only? 

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Operating system

An operating system (OS) is the software that controls all other application programmes in a computer after being installed into the system first by a boot programme. Through a specified application programme interface, the application programmes seek services from the operating system (API). Additionally, users can communicate directly with the operating system by using a user interface, such as a graphical user interface (UI) or a command-line interface (CLI) (GUI)

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