#How to run a disk check on linux free#

If you are using more than one Linux distribution (or operating systems) on the same disk or you have multiple disks on your system, you need to mount them first in order to see the free space available on those partitions and disks.Р”Р‡or example, my Intel NUC has two SSDs and 4 or 5 Linux distributions installed on them.

Keep in mind that the df command only shows disk space for mounted filesystems. Missing disk space? Check if you have mounted all disks and partitions Since they are under root, you donРІР‚в„ўt need to count their used disk space separately. With the loop devices, snap applications are sandboxed in their own virtual disk. Loops are virtual devices that allow normal files to be accessed as block devices. YouРІР‚в„ўll see plenty of them while checking disk space in Ubuntu because of snap applications. udev: The udev filesystem is used for storing information related to devices (like USB, network card, CD ROM etc) plugged to your system.You can ignore this virtual filesystem comfortably. tmpfs: The tmpfs (temporary filesystem) used for keeping files in virtual memory.If you have 2-3 big partitions (like root, home etc), youРІР‚в„ўll have to make a calculation here. In my case, I have used 41% of the 232 GB of disk space under root. Root is mounted on /, EFI in /boot/EFI etc.

You could identify which partition is used for what purpose from its mount point. In such cases, these partitions are reflected with a number at the end of the РІР‚Вdisk nameРІР‚в„ў, like /dev/sda1, /dev/nvme0n1p2 etc. Your Linux system might have several partitions on your disk for boot, EFI, root, swap, home etc. This is not a hard and fast rule but it gives you an indication to easily recognize the actual disk from the crowd. Your actual disks should normally be listed as one of the following: When you use the df command to check disk space, it will show a bunch of РІР‚Вfile systemsРІР‚в„ў with their size, used space and free space. Method 1: Checking free disk space in Linux with df command (and understanding its output)

How to run a disk check on linux