writing my own OS.....where to start from??

Well here is a bit of info on the subject... hxxp://my.execpc.com/~geezer/osd/
alt.os.development would also be a good place to find more info

[zEr0]

in my opinion the first and the most important thing to write OS is to know very very much about Memory Management, without good and nice memory management you canť write some nice kernel

but its very hard to work

[N0P]

Try reading source code of other O.S. such as LinuX,HURD,BSD
P.s.> reading iz a source of knowledge ! Soorrry for my bad english ;o))

Have look here, you may get something.....

http://www.cse.ogi.edu/class/cse526/Reading%20List.html


http://www.nondot.org/sabre/os/articles

http://www.memorymanagement.org

http://www.williamstallings.com/OS4e.html

Tutorial for OS writers (but in Russian ): hxxp://www.codenet.ru/progr/os/intro.php

If you interesting in "Realtime Operating Systems. Concepts and Implementation of Microkernels for Embedded Systems." by Dr. J��rgen Sauermann, Melanie Thelen, let me know. I'll send.

linux is a good example.

you should write some code switch to 32-bit model(in x86 pc).

Originally Posted by N0P

Try reading source code of other O.S. such as LinuX,HURD,BSD
P.s.> reading iz a source of knowledge ! Soorrry for my bad english ;o))

You would go crazy if you try to read the source of Linux, or BSD. It will take you couple months just to understand the low level code. Why not try to start with this books "linux kernel internal", then move up from there. I also have a book "Writing 32-bit OS" from Sams which have all the source in there too. PM me if you want the source.

[N0P]

Originally Posted by ssnui

You would go crazy if you try to read the source of Linux, or BSD. It will take you couple months just to understand the low level code. Why not try to start with this books "linux kernel internal", then move up from there. I also have a book "Writing 32-bit OS" from Sams which have all the source in there too. PM me if you want the source.

Well, i haven't enough money to buy such bookz and stealing iznt good way ... when i started to lernt something about how o.s. works around year 1996.. there was not such books ... Btw>
thiz source code iz well documented and you shuldn't read whole source ;o)) ..

Sorry for my English ,iam only human ;o))

The best OS's I've seen for beginners are SteveOS and JeffOS...both are really easy c code on setting up the IDT, keyboard handlers, basic memory management/paging.

For something more serious, I really love ReactOS (I'm a developper in the team). It's an open-source clone of Windows NT and I'm sure in a couple of years will run more then 80% of Windows apps. The whole kernel is really enlightening to look at, and it works basically just like NT's.

Best regards,
Alex Ionescu
http://www.relsoft.net

This is the "write your own Operating System" OS-FAQ.
/http://mega-tokyo.com/osfaq2/