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Recovery From Half An MD Mirrored Pair

In the process of decommissioning an old physical server I wanted to recover some data from the server's drives. The failing server was configured with a SATA RAID1 pair that contained a logical volume group (LVM). So I could either boot up the old server, change it's IP address, and recover the data over the network.... or I could just recover the data directly from one of the drives [they are a mirrored pair after all]. But only having a USB caddy for one SATA drive the trick was to get the RAID1 array to come up on my laptop with only one drive.

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