Hi all, Last time, I emailed to linux-kernel and kernenewbies mailing-lists about how to speed up kernel compilation. I received very useful peace of advice about using "ccache". Now I want to modify and compile a unique custom kernel several times. I used https://help.ubuntu.com/community/Kernel/Compile to compile custom kernel. This tutorial uses "kpkg" command to build kernel and it produces two .deb files: "linux-image" and "linux-header" as result. So for the first time I followed this tutorial. For next times, according to to experts' advice, I use "make all" in custom kernel root directory to rebuild kernel. I am not sure that it would be enough to use changed kernel after rebooting. As I asked from some experts, It is also required to install kernel again, but they were not familiar with "kpkg" and "dbkg",... commands for kernel installation. Should I use "dbkg" command after every time I rebuild kernel, for re-installation? If anybody is familiar with these method of kernel installation, please help me. It is very urgent, because it is related to my B.S. thesis :P Regards, -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran