I 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.
USB Copy ends with a non-helpful error message
The 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 (äöü) in them.
Any ideas of why this is and how to fix it?