ITS ALIVE!!! Almost any way. I finally booted the drives after backing up the drive with the current info. It has booted into Centos and to my supprize it is using the drive with the most recent info. But it is not using raid as far as I can tell. If I load logical volume management it shows Uninitialized Entities /dev/sda partition 1 partition 2 partition 3 /dev/sdb partition 1 partition 2 partition 3 I tried mounting sda3 and check and found it is the older info the (drive to be replaced) So from what you stated below I would run: sfdisk -d /dev/sdb | sfdisk /dev/sda Is this correct because sdb has the most current info and sda is the old info. Then I would run mdadm Thanks Scott Silva wrote: > Hi > > Thanks for your help, I am sure your busy doing other things as well. > > As I stated in previous postings I have changed the scsi ids and now > with the two drives attached it will boot from the old drive (I am > assuming it is the old drive because the other drive would'nt boot on > its own. > > If I do boot to centos now will it rebuild the mirror from the booting > drive to the other drive? > > I am worried about haveing the current info over written by the old info. > > At this point I will settle for just getting the one drive that has > the current info booting and working. > > Thanks for any help > If the system is running, and you know which drive is which, you can repair very easily now. If everything is running from /dev/sda and the bad drive is /dev/sdb you can do the following (make sure which drive is which before continuing); sfdisk -d /dev/sda | sfdisk /dev/sdb >-- make sure on the drives .. good drive first, bad drive second. Then you can add the partitions back to their arrys with mdadm.