What does use my SD card size

Installation
1

My Home Assistant gives me lately a warning: Available space is less than 1GB!

But I do not know what file(s) are eating the space om my SD card.

Running with RPi4

  • Installatiemethod Home Assistant OS
  • Core 2025.5.2
  • Supervisor 2025.05.3
  • Operating System 15.2
  • Frontend 20250516.0

Info from command line:

→ / du -h
From the root it tells me all the files together are using 3.0G

→ / df -H
Filesystem Size Used Available Use% Mounted on
overlay 13.9G 12.5G 804.0M 94% /
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /data
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /addon_configs
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /addons
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /share
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /backup
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /media
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /ssl
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /homeassistant
devtmpfs 1.6G 0 1.6G 0% /dev
tmpfs 1.8G 0 1.8G 0% /dev/shm
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /run/audio
tmpfs 1.8G 0 1.8G 0% /dev/shm
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /etc/asound.conf
tmpfs 757.9M 1.6M 756.3M 0% /run/dbus
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /etc/resolv.conf
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /etc/hostname
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /etc/hosts
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /etc/pulse/client.conf
tmpfs 757.9M 1.6M 756.3M 0% /run/log/journal
/dev/mmcblk0p8 13.9G 12.5G 804.0M 94% /var/log/journal
tmpfs 1.8G 0 1.8G 0% /proc/asound
devtmpfs 1.6G 0 1.6G 0% /proc/interrupts
devtmpfs 1.6G 0 1.6G 0% /proc/keys
devtmpfs 1.6G 0 1.6G 0% /proc/latency_stats
devtmpfs 1.6G 0 1.6G 0% /proc/timer_list
tmpfs 1.8G 0 1.8G 0% /sys/firmware

Do I have to run a somekind of diskrepair of are there other commands to find that place where space consuming files are stored?

2

Why does the Size report 13.9 GB? What is the size of your SD card?

What does fdisk -l say?

With such a small disk this will be a regular occurrence even if you clean it up now.

If you’re trying to get a summary of file size by directory you can run (in bash):

shopt -s dotglob
du -shc *

But the above commands aren’t really that useful considering the small size of your disk.

3

You can try

ha su repair

to clean up some docker overlay files, but a 16 GB card is really too small. 32 Gb is the minimum.

1 Like
4

thnx for your reply.

fdisk -l doesn’t give any reply. I just get the cursor on the next line.
As expected gives dh -shc the reply 3G is used

5

From the installation docs:

" * Make sure to use a card that provides at least 32 GB."

6

Thnx for your reply

I did use the command ‘ha su repair’ successfully, but unfortunately there isn’t any change.

7

This weekend I’ll upgrade to 64gb.

I’ m curious about the diskusage…