Hi, i have a server running on only one scsi disk. I got now one scsi disk extra and i want to transform the actual installation to use both disks in a raid1. Therefore i want to mirror each partition with md. The Question now is how to do that, if possible, without destroing the installed OS. I thought it should be possible to do it in the following way: 1. create the same partitions on the secondary drive 2. create a mirror for each partition with the actual installed partition marked as "missing" 3. attach the missing partition (not sure how the specify sync direction) 4. edit fstab 5. reboot. As u can see im afraid douing this becaus im not sure a: how to specify sync direction and b: if the creation of the now new superblock destroy my filesystem So if someone have ideas, please Greetings from munich Stefan Majer - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html