When mirroring the system disk by GDS, note the following points in installing OS.
Configure and set up the system disk to satisfy "Conditions for system disk configuration and settings" in "3.5 System Disk Mirroring Preconditions."
If you set up partitions automatically by the operating system installation program before its installation, system disks can be in LVM configuration. In this case, change the partition setup to the configuration which system disks are not in LVM configuration and install the operating system again.
When re-installing OS, see "9.5 OS Re-installation."
