Christophe, I had written the procedure I use to migrate data between disks when my server one has died (even moving /dev and conserving old permissions to the files, I know "cp -a" does almost the same with files and directories, but special devices mounted on /dev). http://lists.centos.org/pipermail/centos/2006-October/071313.html I hope this link could help you Merry Christmas Christophe wrote: > Hi, I'm trying to copy my CentOS install to a new drive. > > - old drive is /dev/hda and had > hda1 : /boot > hda2 : swap > hda3 lvm > hda5 : lvm > hda4 : /usr/local > - new drive is /dev/hdb > hdb1 : /boot > hdb2 : swap > hdb3 : / > > I decided to get rid of lvm which is useless to me. I've created and > formated the new partitions and copied anything from the old drive to > the new one excepted the /dev entries by issuing some cp -a > With grub I did root (hd1,0) then setup (hd1) > I've also modified the content of hdb1 /boot/grub/grub.conf and passed > param root=/dev/hdb3 to the kernel > > I didn't find how to created all the /dev entries but I read somewhere > that 2.6 kernels create them at boot time. > > So, what is the problem ? (I boot my server by selecting the new drive > from the BIOS boot devices menu) : boot goes until 'checking root > filesystem', then complains about something really wrong on /dev/hdb3 > and send me to a kind of rescue shell. > I did a fsck on /dev/hdb3 which says the volume is clean > > Don't know what I've missed and what I have to fix... > > just in case, cat /proc/mounts gives me > rootfs / rootfs rw 0,0 > /proc /proc proc rw,nodiratime 0 0 > none /dev tmpfs rw 0 0 > /proc /proc proc rw,nodirattime 0 0 > /proc/bus/usb /proc/bus/usb usbfs rw 0 0 > /sys /sys sysfs rw 0 0 > none /dev/pts devpts rw 0 0 > > > Thanks and merry Christmas to all ! > > > > > > > ___________________________________________________________________________ > Découvrez une nouvelle façon d'obtenir des réponses à toutes vos > questions ! Profitez des connaissances, des opinions et des > expériences des internautes sur Yahoo! Questions/Réponses > http://fr.answers.yahoo.com > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Lorenzo Martínez Rodríguez Consultor de seguridad informática