p3stil3nc3

I'm using Unraid in a VM (Proxmox-Host). There is only 1 virtual Disk attached which is now 12TB. I need to resize the virtual disk in Proxmox (no problem) and then extend it in Unraid. Unraid is able to recognize that the disk (formatted xfs) has gotten bigger, but then says "wrong disk" and I don't get the mount point to show up. Using Tools > New Config only gets you to create a new array for which Unraid is not recognizing the file system / is not able to mount it properly. One likely has to extend the file system on the disk itself. But how to do with no mount point showing up? Does anyone have an idea on how to do this?