How do I convert my root disk to RAID1 after installations of Red Hat Enterprise Linux 4 or 5?

Solution Verified - Updated -


  • My installation is currently on a non-raided disk but it needs to be a RAID1 mirror
# mount -l | grep boot
/dev/sda1 on /boot type ext3 (rw) [/boot]
# lvs -o lv_name,vg_name,devices
  LV       VG         Devices       
  LogVol00 VolGroup00 /dev/sda2(0)  
  LogVol01 VolGroup00 /dev/sda2(284)


  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Logical Volume Manager (LVM)
  • Software Raid (mdadm)

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