How to find the system calamares installed partition details?

[scotty65]

btrfs uses subvolumes rather than partitions, so getting the size of individual directories such as /home/ or /etc/ is a different process to that used with ext4, which was manjaro’s previous default file system.

These topics may help:

How can I see the disk usage with btrfs?

Thanks Linux-aarhus. I read you’re remark about btrfs. Is there a proper way to determine the real size on disk for a btrfs subvol ? They all have the same size on my system. /dev/sda2 50G 14G 36G 28% /.snapshots /dev/sda2 50G 14G 36G 28% /home /dev/sda2 50G 14G 36G 28% /var/cache /dev/sda2 50G 14G 36G 28% /var/log /dev/sda3 49G 2G 47G 4% /storage /dev/sda2 50G 14G 36G 28%…

[HowTo] get Space on BTRFS

If you encounter a situation where a Btrfs volume is out of space, There is a way out However, you have to accept that Btrfs is a “strange” filesystem. So if you’re doing things that would help with other filesystems, it might NOT help with btrfs. If you want to know why, check out the wiki Here are a few simple tips: 1. Only use btrfs to meassure the unallocated space on your filesystem: sudo btrfs filesystem usage / 2. Look at “Device unallocated:” If the Unallocated size is less than 10GB…

Btrfs Best Practice

calamares already does that automatically, or at least, if you go with automatic partitioning. It will create four subvolumes in addition to the top-level subvolume (which cannot be deleted)… @, which will be mounted as / @home, which will be mounted as /home @cache, which will be mounted as /var/cache @log, which will be mounted as /var/log calamares will however not create any additional subvolumes, nor will it set the default subvolume when the partition is mounted without e…

Required Disclaimer: I’ve never used btrfs, so my knowledge of its workings is very limited.

Also, as you are a Plasma user, the filelight application (may require installation) is a good way of seeing your file system usage in a GUI:

Filelight

pamac info filelight

❯ pamac info filelight
Name                  : filelight
Version               : 26.04.3-1
Description           : View disk usage information
URL                   : https://apps.kde.org/filelight/
Licenses              : GPL-2.0-or-later LGPL-2.0-or-later
Repository            : extra
Installed Size        : 1.6 MB
Groups                : kde-applications kde-utilities
Depends On            : glibc kconfig kcoreaddons kcrash ki18n kio kirigami
                        kirigami-addons kwidgetsaddons libstdc++
                        qqc2-desktop-style qt6-base qt6-declarative
Optional Dependencies : --
Required By           : --
Optional For          : dolphin
Provides              : --
Replaces              : --
Conflicts With        : --
Packager              : Antonio Rojas <arojas@archlinux.org>
Build Date            : Wed 01 Jul 2026 02:00:04
Install Date          : Sat 04 Jul 2026 12:00:38
Install Reason        : Explicitly installed
Validated By          : Signature
Backup files          : --