I am having trouble freeing up space in my system. The output of the command df is:


I'm not sure what the device /dev/nvme0n1p5 is.

When I do sudo umount /dev/nvme0n1p5 I get:


I'm not sure where it is that I'm supposed to be freeing space, but this device is taking a considerable amount of space compared to all other devices.

Also, What exactly is this device? I tried researching it and found no answers.


/dev/nvme0n1p5 is the device (disk partition) hosting your root (/) It have to be mounted all the time. You can use

du -h /

to get what is utilizing the /

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