Error -50
macOS / Finder
Filesystem / Sync
macOS / Finder Error -50 — Parameter & Disk Permission Fault
Error -50 (“Error in user parameter list”) commonly shows up when copying large archives to exFAT/FAT32 external SSDs or syncing locked Finder metadata across SMB shares.
Resolution Commands
dot_clean -m /Volumes/YourExternalDrivendiskutil verifyVolume /Volumes/YourExternalDrive
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