安装了红帽企业版Linux 4之后，怎样创建RAID 1阵列，并且将/和/boot分区移到阵列上？
已更新 -
这里假定红帽企业版Linux 4系统已经安装，并且在系统中已经配置了以下分区：
/dev/sda1 is /boot
/dev/sda2 is / (root)
/dev/sdb1 is the same size as sda1 and has partition type Linux RAID
/dev/sdb2 is the same size as sda2 and has partition type Linux RAID
在一个root控制台，执行命令：
mdadm --create /dev/md1 -...Subscriber exclusive content
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