This is the minimum os I am developing ( rajnesh raturi ). rajneshraturi25@gmail.com or rajneshraturi@gmail.com To compile this you just need gcc, nasm, make, and done. To test this you need qemu or can be tested on real hardware. To test on qemu do the following. make sh makefloppyimage.sh sh run.sh To test on real hardware make sh makefloppyimage.sh copy the floppy.img to floppy. < Working on implementing hard disk image > Right now it has following features- Interrupt support. Virtual Memory. Pci Bus support. Networking - Only to IPv4 and Icmp layer. Need to implement TCP. I have implemented only rtl8139 driver, so it will work with only that. What will you see. Once you run this you will see a command prompt to fire very minimum commands. ping, clear, dmesg, etc. For any help or other mail at rajneshraturi25@gmail.com Present Status- At present I am working on implementing multitasking. Multitasking framework is there ( fork and scheduler ) but it works only is virtual memory is diabled. Reference - For os framework - http://www.jamesmolloy.co.uk/tutorial_html, wikipidia, http://wiki.osdev.org/Expanded_Main_Page, and many others. For more check manuals/oswebsite. For networking - Wikipidia and manuals provided by rtl8139 and other interface card manufacturer.