Hey Piyush,
If you want to develop an OS then firstly u must have a strong command
on C,C++, Assembly and low level programming and Concepts to be used in
Design of OS (Operating Systems Concepts and Computer Systems
Architecture and Organization Concepts). Building an OS is not a Joke.
It requires great dedication, effort and lots of time ( maybe months or
years). If u r serious about creating an operating system then firstly
try to build kernel . Mainly Kernels are of four types:-
Follow the wikipedia links and try to understand the concept of
kernels. Actually to understand the concept of kernels you would need
to understand more than just kernel. For creating a kernel u must first
know the complete computer architecture of Machine for which you are
programming (i.e. you have to first decide that for which processor you
are creating Operating system e.g. x86 Based Processors-(Intel and AMD)
have their own instruction set than Powerpc processors. So u need to
know the platform design achitecture). For system architecture mainly
u need to know instruction sets. By the way Operating System Design is
a Complete Subject in 6th Semester(My College) in Computer Science
Engineering (B.Tech) (Maybe at different semesters at different
college) and the complete information cannot be provided in this thread
itself (It's too vast). You need to study the complete "Operating
Systems" semester course to understand the concepts of OS (e.g. Time
Scheduling, Multiprogramming, Interrupt Handling and lots and lots of
more concepts) just to create kernel. U need to understand the Hardware
Interrupts, Device Data Communication methods (Concept of Buses) and
control mechanism of a computer system. In short if you are first to
these concepts then forget about creating operating system. First read
about Computer Systems Architecture ( A Self Contained Semester course
in Computer Science Engg.). Then Proceed to Learn Assembly and Low
Level Programming (Another Semester Course). After Than Study OS
Concepts. Finally u will be able to create your own OS. But mind it it
is not so simple as to say about it. So after all I have written it
means that To Write even a small OS you need to have at least B.Tech
degree in Computer Science Engg. as of these days or you must have
complete knowledge about Computer System Architecture and OS Concepts.
Following are some books for further reading:
1. Computer System Architecture and Organization - Designing for
performance, 5th Edition ( Author:- William Stallings, Publisher:-
Pearson Education).
2. Milan Milenkovic - Operating Systems Concepts and Design (Publisher:- Tata Mc Graw Hill).
3. D.M. Dhamdhere – Systems
Programming and Operating Systems, Tata McGraw Hill, 2nd Revised
Edition.
If You are successfull in developing kernel then you have actually made
a small OS. And if u have succeeded in creating that kindly Send it to
me so that I can have a try on it.
Any further questions are welcome...
Best of Luck!
