Use this method:
To verify the installation is correct and the unit is operational: R2D2-72 Water Softener
Connect the unit using the provided 1" connection kit and mounting block. Attach the 12 mm wastewater hose to the drain connector.
sudo fdisk /dev/nvme0n1 # Create GPT partition sudo mkfs.ext4 /dev/nvme0n1p1
Verified Installation Guide for Aqmos R2D2-72 Water Softener Aqmos R2D2-72