--- a/README	Tue Jan 24 17:54:16 2012 +0100
+++ b/README	Fri Feb 03 17:56:41 2012 +0100
@@ -22,3 +22,22 @@
 $ cd ide
 $ python runide.py
 
+= About the C version of the OS =
+
+To build the C kernel, enter:
+$ cd cos
+$ make
+
+Running the OS with bochs:
+$ bochs -q
+
+required tools:
+- bochs: for simulating the OS
+- mtools: for copying files to the bootdisk
+- nasm: for assembler instructions
+- gcc: for compiling the C sources
+- make: for building the system
+- python 3: for building the initial ramdisk
+
+Enjoy!
+