Thanks Alexandar for your soon answer, BUT, is there another easier way to do this? Regards, Israel >>Quoting israel.garcia at cimex.com.cu: > >>How can I build a RAID 1 of all my particions of sda using mdadm? >>1. Boot into rescue mode. >>2. Shrink each file system a bit. Generally you'll use resize2fs >>utility. MD uses some space at the end of partition for its metadata, >>and you don't want this to overwrite the end of your filesystem. Most >>HOWTOs on the net list this as one of the last steps (after mirrors are >>created). However if you do this as last step, in rare cases it may >>lead to data loss. You probably want to be on the safe side and shrink >>file systems first (this will insure your data is secure). I'm not >>sure by how much you need to shrink, should be somewhere in >>documentation how many sectors at end of partition MD uses for >>metadata... >>3. Create mirror(s) using mdadm. Create using only one real partition >>and use "missing" instead of second partition (wish Anaconda installer >>would allow for something like this). Then use mdadm to add second >>partition to the mirror. Something like: >># mdadm --create /dev/md0 --run --level=1 --raid-devices=2 /dev/sda1 >>missing >># mdadm /dev/md0 -a /dev/sdb1 >>4. Edit /etc/fstab file. >>5. You'll need to rebuild initrd image(s) for installed kernel(s). >>Just mount your filesystems somewhere, chroot into it and run mkinitrd. >> Mkinitrd should be smart enough to figure it'll need md device >>drivers by looking into fstab file. Use -v option to mkinitrd to make >>sure it included needed drivers into new initrd image. >>6. Configure boot loader (LILO or Grub, whicever you use) to reflect >>changes. Make sure you install boot loader into MBR of both drives. >>-- >>See Ya' later, alligator! >>http://www.8-P.ca/