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I just did a fresh install of 18.04 LTS and chose system encryption from the installation menu. The system is now up and running. Using sudo blkid it looks like the swap partition is not yet encrypted. But I'm not sure what to look for in the output.

If I want the system to be fully encrypted, do I now need to separately encrypt the swap partition?

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Ubuntu 18.04 no longer uses a swap partition but a file named swapfile on main partition. I guess it must be encrypted too. I found some information at: https://bogdancornianu.com/change-swap-size-in-ubuntu/

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