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I run my HomeAssistant on a RaspberryPi 4 from a SD card. Two days ago I did a upgrade to the newest version (I don't remember if it was HomeAssistant or the Operating System) and since then it does not boot anymore.
I connected it via HDMI to a screen and got those errors:
It looks to me that the SD card is corrupted or something. Any idea if I can fix it in any way or do I need to redo the setup from scratch?
Your SD card is shot. SD cards aren't built for sustained read/write cycles, and RPi installs regularly kill them from excessive access to disk from things like logging and DB access.
On HA specifically, you can solve for part of this by reducing all logging to minimal, and then for the bulk of the rest setup something like log2ram to store system logs in RAM and prevent wearing out the SD disk.
A more permanent fix would be to get an SSD instead, but that's not always an option.