Jellyfin can't acces mounted drive

[SiebFin]

I am running jellyfin on raspberry pi os, installed via casaos, i have an external hdd, mounted at /mnt/hddmedia.

I can access the drive from file manager, but jellyfin just gives the error: The path could not be found. Please ensure the path is valid and try again.

Could someone please help me?

[TheDreadPirate]

You need to grant Jellyfin access to the mount in CasaOS.

[SiebFin]

How do I do that?

Sorry, but I'm not familiar with linux, etc

[TheDreadPirate]

If I understand CasaOS correctly, you'd make this change in CasaOS and not Linux directly.

Also, did you map the external hard drive to Jellyfin's container?