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Upon reboot, Linux software raid drops one device of a RAID1 array

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http://www.linuxquestions.org – One of my four Linux software raid arrays drops one of its two devices when I reboot my system. The other three arrays work fine. I am running RAID1 on kernel version 2.6.32-5-amd64 (Debian Squeeze). Every time I reboot, /dev/md2 comes up with only one device. I can manually add the device by saying $ sudo mdadm /dev/md2 --add /dev/sdc1. This works fine, and mdadm confirms that the device has been re-added as follows: Code:     mdadm: re-added /dev/sdc1 After adding the device and allowing the array time to resync, this is what the output of $ cat /proc/mdstat looks like: Code: (HowTos)