My MacBook drive size is 120GB. Every few months I empty the photo library, I delete my GarageBand recordings and empty the iTunes resources—all these after I copy them on an external hard drive. So, nothing is lost.
But this ends in duplicated documents on my external hard drive. For instance, I always copy the whole photo library, but on my MacBook I do not delete the
What I want to do is: to have one file on my external hard drive for each of the following libraries:
- iMovie library
- Photos library
- iTunes library
- iBooks (?) — Not really sure where they are stored, but would be nice to back up these as well
Then, when I want to free up the space on my MacBook, I want to merge the MacBook libraries (iMovie, Photos, iTunes and iBooks) into my external hard drive libraries, but without deleting anything from my hard drive and keeping the metadata (such as edited photos and so on). For instance, if I deleted a photo from my MacBook which appears in the HDD library, I don't want it to be deleted there as well.
What is the right way to do this?