Hi , as i mentioned in my earlier mails issue with compiling hello-1.c earlier there were suggestions from many people thanks for that . I have read make manual and finally came with good make file. Now , i facing different error . ==========error message # make make -C /lib/modules/2.6.11-1.1369_FC4/build M=/home/gowri/workspace/kernel_pract modules make: *** /lib/modules/2.6.11-1.1369_FC4/build: No such file or directory. Stop. make: *** [all] Error 2 =====end error message I have already installed kernel sources using yum , "yumdownloader --source kernel". But when we type command rpm -qa | grep kernel-source nothing is returned . is it the problem related to kernel source ? if yes how to download kernel source. Make file ============== obj-m += hello-1.o all: make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules clean: make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean ===========================end of make file -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/