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Install WD Drive Utilities (available only on Windows and Mac).
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Under RAID Management in WD Drive Utilities, choose Individual Drives (JBOD) and format the 2 drives.
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Then boot on a GNU/Linux machine and run the following commands:
- Remove existing partitions and make sure that you are using GPT:
- Remove existing partitions and make sure that you are using GPT:
sudo parted /dev/sda