OSX El Capitan - Photos library backup

Discuss new features and functions
Posts: 1
Joined: 18 Oct 2016

Luke

I am using OSX El Capitan 10.11.6.
I would like to backup my Photos library to an external drive "Foto Library.photoslibrary" but I received an error :

Cannot open directory "/Volumes/Itunes_Foto/.DocumentRevisions-V100".

Error Code 13: Permission denied (opendir)

Does I have to configure the synchronization settings in a particular way?

Now in the Include Tab I have set " *\ "

Thank you in advance