Before we had a proliferation of services in the cloud, it was common to stick our iPhones and iPads on the Mac to be able to synchronize everything that was information (contacts and calendars, for example) or file (photos, videos, documents, etc.). Today, with iCloud becoming increasingly part of our lives, that relationship has changed a little.
Still, many people have gigantic photo libraries and prefer to continue doing this manually than having to, for example, subscribe to 200GB or 2TB of space in order to activate the iCloud Photo Library feature and abandon iTunes altogether.
my case. I have a library of almost 200GB and I don't want to subscribe to 2TB of space (I currently have 200GB). So, I prefer to sync my photos and videos manually through iTunes.
The problem is that, from time to time, everything just stopped working. Even though I fed my library with new photos every week, they just didn't sync to my iPhone for some obscure reason that I still can't explain.
So I decided to delete all the photos on my iPhone so I could sync everything again in order to fix the problem. And who said I could do that? Even if you deselect the option ?Synchronize Photos? in iTunes and choose to remove the photos, absolutely nothing happened.
And there is no use trying to delete it on the iPhone / iPad as these photos synchronized by the computer are not ?accessible? in iGadgets (you cannot delete any of them and, if you want to edit, you need to duplicate the file).
I then tried another strategy: take the Photos app out of play and sync another folder with a few images in order to create a new library on my iPhone. Nothing like the new photos until they synced, but the old ones don't leave my iPhone at all.
I was already giving up and accepting the fact that I would have to do a new installation on my iPhone to fix the problem when I finally found the solution.
How to delete photos synced by iTunes from iPhone / iPad
Looking in interwebs for a solution, i found a topic in the Apple discussion forum giving a relatively simple tip to fix the problem: no iGadget, comes Settings Photos and check the iCloud Photo Library option, even if you didn't want to use the feature.
As I said, I have a library of almost 200GB and I don't want to subscribe to 2TB of space on iCloud just for that. Activating the iCloud Photo Library, even if you have less space in the cloud than necessary, the system tries to erase everything on your iPhone / iPad / iPod touch first.
After everything is deleted, just disable the feature, re-awake the USB cable on the Mac, open iTunes and choose what you want to sync. ?