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View Full Version : Won't (or can't) copy files


bastokyg
06-18-2017, 03:05 PM
Error | Exception: Failed to clear ACLs on /Volumes/MacBook Pro Backup. Invalid argument (-1)

This is an incremental backup. I've been using SuperDuper for years without an error, but I'm not able to backup this time.

dnanian
06-18-2017, 05:04 PM
You neee to power off your Mac and the drive, then power up again.