I was about to install WinBoat, which requires 32GB of free space in /var. Thats when I noticed, that I don’t have much space left.
After some investigating I found that a big portion of my 256GB Disk is occupied by the “system” and not by my installed applications and data. The /var/home directory only occupies 17.6GB and right now my disk has around 32GB of free space.
This leads me to the assumption that the installation itself takes up around 200GB which feels a bit excessive.
Questions
- What is taking up that much disk space? (Are older images cached somewhere? Can I clear this cache?)
- For the future, how can I properly investigate what is taking up space myself? (df, Disks, Disk Usage Analyzer) seemed all a bit confused - I wasn’t able to quickly get a good picture of where my space is going
Info
System Info
# System Details Report
---
## Report details
- **Date generated:** 2025-09-10 09:24:05
## Hardware Information:
- **Hardware Model:** Dell Inc. OptiPlex 7060
- **Memory:** 32.0 GiB
- **Processor:** Intel® Core™ i7-8700 × 12
- **Graphics:** Intel® UHD Graphics 630 (CFL GT2)
- **Disk Capacity:** (null)
## Software Information:
- **Firmware Version:** 1.27.0
- **OS Name:** Bluefin (Version: 42.20250907.1)
- **OS Build:** 921e6ba
- **OS Type:** 64-bit
- **GNOME Version:** 48
- **Windowing System:** Wayland
- **Kernel Version:** Linux 6.15.9-201.fc42.x86_64
Output of df -BG
❯ df -BG
Filesystem 1G-blocks Used Available Use% Mounted on
/dev/nvme0n1p3 237G 201G 32G 87% /sysroot
composefs 1G 1G 0G 100% /
devtmpfs 16G 0G 16G 0% /dev
tmpfs 16G 1G 16G 1% /dev/shm
efivarfs 1G 1G 1G 35% /sys/firmware/efi/efivars
tmpfs 7G 1G 7G 1% /run
tmpfs 1G 0G 1G 0% /run/credentials/systemd-journald.service
/dev/nvme0n1p3 237G 201G 32G 87% /var
/dev/nvme0n1p3 237G 201G 32G 87% /var/home
/dev/nvme0n1p2 1G 1G 1G 39% /boot
tmpfs 16G 1G 16G 1% /tmp
/dev/nvme0n1p1 1G 1G 1G 3% /boot/efi
tmpfs 1G 0G 1G 0% /run/credentials/systemd-resolved.service
tmpfs 4G 1G 4G 1% /run/user/1000