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fstrim second SSD on Ubuntu?
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fstrim second SSD on Ubuntu?

torrboxtorrbox Member
edited May 2018 in Help

I am on Ubuntu 18.04, installed to SSD1. I then plugged in a LUKS encrypted SSD (SSD2).

fstrim -v / works and trims SSD1, but I cannot fstrim SSD2, regardless of where I mount it (either /media/username/ssd2/, or manually with "cryptsetup open /dev/sda1 ssd2" and "mount /dev/mapper/ssd2 /mnt").

fstrim: /media/username/ssd2/: the discard operation is not supported

What am I doing wrong? Thank you.

edit: I previously used SSD2 as main SSD mounted at / and had no issues with fstrim.

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