BackgroundI have a large number of files from my mac that I first copied to a FAT32 hard drive and now migrated to a Synology NAS (DS216 with DSM 6 in my case, using ext4 internally) with rsync. I try to use Synology USB Copy to copy these files to another FAT32 USB volume. I would love to use this tool since it allows automatic triggering of copy jobs when a particular USB device gets connected.ProblemUSB Copy ends with a non-helpful error messageThe USB Copy task My_Backup_Task on  ds216 encountered unknown errors. The last error code is -10. Please  try again or contact Synology Support for assistance.When I compare the source and destination file trees, some files are missing especially with Umlauts () in them.Any ideas of why this is and how to fix it?
Why does Synology DSM's USB Copy skip Umlaut-named files?
osx;file copy;synology