Hi Folks, since the last two days I've tried to make a so named "change_root" mechanism with support of kernels sysctrl (/proc/sys/kernel/real-root-dev) inside of a minimal initrd image. I use kernel 2.2.19 so I can't use the newer "pivot_root" mechanism. In kernel documentation initrd.txt says I have to write the major-minor code of the new root FS into the virtuell file /proc/sys/kernel/real-root-dev, but nothing is going on. Here my boot strategy (all things at x86 plattform):
BIOS boots from first master IDE device (LILO). LILO loads kernel and initrd image. Kernel mounts initrd image as first root FS in ramdisk(/dev/ram0); in lilo.conf is standing: append="root=/dev/ram init=/linuxrc rw". Initrd image covers a small busybox, /linuxrc is a shellscript and has to mount /dev/hda1, extract the real root FS from a tarball to /dev/ram1, unmount /dev/hda1 and mount /dev/ram1 as new root FS. So at the end of /linuxrc I write: mount -t proc /proc /proc echo 0x101 >/proc/sys/kernel/real-root-dev exec /sbin/init ... BUT NOTHING IS CHANGED !!! :-( Is there any step I've forgot? The same procedure with an existing root FS at /dev/hda3 has the same result. Please help me. I'm very desperate and under time pressure. Stephan -- ====================================================================== Stephan Linz Software Engineer MAZeT GmbH Email: mailto:[EMAIL PROTECTED] Branche office Jena Phone: +49-3641-2809-55 Göschwitzer Straße 32 Fax : +49-3641-2809-12 D-07745 JENA Germany Visit our web-pages: http://www.MAZeT.de ====================================================================== -- To unsubscribe from this list, send a message to [EMAIL PROTECTED] with the command "unsubscribe linux-embedded" in the message body. For more information, see <http://waste.org/mail/linux-embedded>.
