Hello, > When I tried the same in Fedora Core 4 /boot//boot/initrd-2.6.11-1.1369_FC4.img > and tried mount -o loop initrd-2.6.11-1.1369_FC4 tmp In kernel 2.6, initrd is a cpio image, not a loopback image. You can use gunzip + cpio to extract the content. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/