I have been using your Endless OS for several years and I am very happy with it. The OS is installed on an Asus notebook R207N and runs stable.
But since version 3.9.0 (201109-141440) I have a problem now. On startup I get the error message that the disk space is only 835 MB. But I have only 5 programs with a total of 990 MB installed and no further data is stored. But the flash memory has a size of about 30 GB. The memory analysis shows 26 GB for sysrot. Is the Endless OS really that big? Under UEFI I also see that apparently two versions of Endless OS are installed: 3.9.0 (ostree:0) and 3.8.7 (ostree:1).
Now what can I do as a layman to free up space on the flash memory? I would appreciate your technical advice on this.
Many thanks and greetings from Berlin in Germany