Doing this isn’t necessary.
sudo fdisk -l in your terminal. On PureOS the terminal is called
The output should give you an entry that says something related to LUKS (I’d give you an example but I have no drives currently). Let’s say the encrypted SSD is
/dev/sda and the second SDD is
/dev/sdb (you’ll need to find this information out with the fdisk command). We’ll start by adding a place to mount the drive, say
/media/ssd. We can do this by running
sudo mkdir /media/ssd. Now that the directory exists, we can mount the drive. Assuming the drive is already partitioned (this can be found by looking at the fdisk -l command output), we can mount that partition. To mount the first partition (most likely the one you’ll use) we’ll run the command
sudo mount /dev/sdb1 /media/ssd. The 1 after
/dev/sdb denotes which partition to mount. If you wanted to go a step further, you could mount the drive in a folder in your
/home, allowing for easy access.