Great thanks!
If I now stop the array, change/format Disk1 (the disk I copied all data from) to XFS, then start the array, will this work?
From there I will copy all data from another drive to this drive (Disk 1). I guess what I am wondering is, how will Unraid know where the files are? My shares are setup across all drives. Since I have moved everything from Disk 1 to Disk 4, how does it know where the files are? Is it done through the shares? Some of my folders have data across multiple disks.