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Today my Fedora 32 operation system give me tips that : low disk space on filesystem root fedora:

enter image description here

this tips make me surprise,with my limit experience,not like windows partition, the linux root system contains all file system,I have 1TB SDD and I am very sure the disk space is low pressure.what should I do to fix this problem? why the root not using /dolphin/home folder space? the are different space like window C system partition?

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Almost 70 GB of data in your root partition? That does not look normal, so it's possible that you are using it for the wrong purpose.

Older Fedora versions recommended 3 to 5 GB for the root partition:

A 3.0 GB partition allows you to install a minimal installation, while a 5.0 GB root partition lets you perform a full installation, choosing all package groups.

The requirements have been lifted in more recent versions, but still far from the size that you allocated:

For a minimal installation, a 5 GB root partition will be sufficient. However, for most common installations which include extra packages and a graphical user interface, the root partition should be at least 10 GB; with 20 GB being sufficient for most common use cases.

So the question is really: what are you storing in there? Without any additional information, I can only suggest to check your /var folder, perhaps especially the /var/cache folder. But generally speaking it's likely that your problem is your /var folder.

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    Yes,you are right. I am install 3 kvm virtual machine and using much space in var folder.I have moved the image files to home folder now.@user1301428 – Dolphin Jul 5 at 4:07
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It looks like you decided not to partition when you built your machine and threw everything into the same partition. This can cause problems when you run out of space.

I would recommend checking out KDirStat or ncdu.

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    Thank you,I install a qdirstat using sudo dnf install qdirstat and file the kvm image files take too much space of my root disk.@Aaron D. Marasco – Dolphin Jul 5 at 4:08

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