Webmin “Linux RAID” on Debian

Building my new NAS I am using a single laptop disk (for now, possibly an SSD later) for my OS and will by adding several 1 TB disks into a RAID. While in Webmin trying to setup the “Linux RAID” feature I ran into an error:

The kernel RAID status file /proc/mdstat does not exist on your system

This means that mdadm was not installed on the box, so via the console I ran

apt-get install mdadm

I didn’t want the base OS to be mirrored so I set the first screen to “none” (instead of “all”)¬†and moved through the prompts (dare I say wizard?). After this I refreshed the module list and “Linux RAID” was installed and ready to use!

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