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I have enabled TRIM for my root partition by adding discard in /etc/fstab, following How to enable TRIM?

They mention that special steps are needed if I have an encrypted partition. I have encrypted folders, but not encrypted partitions.

Do encrypted home folders need special steps to enable TRIM?

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/home is a partition, so if you've chosen to encrypt your home directory I think you do have an encrypted partition. Maybe someone more knowledgeable can clarify? –  Tom Brossman Aug 28 '13 at 20:39
/home is not a partition on my laptop - it is a directory in the root partition. I do not have a separate home partition. My user's home directory is a subdirectory of /home, i.e. it's /home/satuon. Also, home directories are encrypted on a per-user basis. For example, I have another user whose home directory is not encrypted. See help.ubuntu.com/community/EncryptedHome. –  sashoalm Aug 29 '13 at 6:25
If your /home is encrypted, Ubuntu still treats it very similar to a different partition, so if people refer to it as a partition, do not be surprised. –  earthmeLon Aug 10 at 18:17

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