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Error with iTunes synch

The last time I tried to synch my iPhone 6S to my iTunes on a Mac mini, I received the message Attempting to copy to the disk "Macintosh HD" failed. An unknown error occurred ( -54.) After clicking ok, the status shows that my iPhone was backed up but my confidence level is low given the error message I received. Any suggestions on how to resolve this? Thanks...

iPhone 6s, iOS 9.1

Posted on Nov 15, 2015 2:41 PM

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Posted on Nov 15, 2015 7:34 PM

== Error -54 ==

From an OS9 reference, error -54 is a software lock on a file or a permissions error. (Although there is no formal list of OSX error code some of the old codes still apply to OSX .)


First, try simply restarting your computer.


Try quitting iTunes, then deleting the .xml (not .itl !) version of the library file in the iTunes folder (iTunes will generate a new one).


iTunes Library cannot be saved (Error -54) - https://discussions.apple.com/thread/1912814 - various things to try.


Unknown error (-54) while syncing ipod - https://discussions.apple.com/thread/1082953 - problem was locked files


Why does iTunes keep showing a -54 error when I sync my iPad? - https://discussions.apple.com/thread/3727114




Error -54 possibly related to Touch Copy - https://discussions.apple.com/thread/3727114 - cleared by deleting preferences on iPad.

3 replies
Question marked as Best reply

Nov 15, 2015 7:34 PM in response to JohnOski

== Error -54 ==

From an OS9 reference, error -54 is a software lock on a file or a permissions error. (Although there is no formal list of OSX error code some of the old codes still apply to OSX .)


First, try simply restarting your computer.


Try quitting iTunes, then deleting the .xml (not .itl !) version of the library file in the iTunes folder (iTunes will generate a new one).


iTunes Library cannot be saved (Error -54) - https://discussions.apple.com/thread/1912814 - various things to try.


Unknown error (-54) while syncing ipod - https://discussions.apple.com/thread/1082953 - problem was locked files


Why does iTunes keep showing a -54 error when I sync my iPad? - https://discussions.apple.com/thread/3727114




Error -54 possibly related to Touch Copy - https://discussions.apple.com/thread/3727114 - cleared by deleting preferences on iPad.

Nov 26, 2015 2:25 AM in response to JohnOski

Follow the steps given by msg- it was the only thing that worked for me, and I had tried various other suggestions...

https://discussions.apple.com/thread/7248947?answerId=29073954022#29073954022

In El Capitan I couldn't do the "repair disk permissions" as such, but I carried out the "first aid" that is offered in Disk Utility now, and then followed msg-'s steps.

To boot in safe mode, shutdown or restart your Mac, and quickly press and hold the SHIFT key when you hear the start up tone, release when the apple logo appears...https://support.apple.com/en-us/HT201262

Error with iTunes synch

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