Forum Discussion
How to backup iphone to external hard drive on my Windows PC
To back up iPhone to an external hard drive. There's a known issue when copying large amounts of data directly from an iPhone to an external drive. Transfers often fail when copying more than about 60-100MB at once directly from the iPhone to an external drive.
Given your 2TB external drive and desire to avoid third-party software:
Use the manual DCIM method or Photos app to back up all your photos and videos to the external drive. This secures your most irreplaceable data.
For everything else, honestly assess if you truly need a full backup. Most users' critical data is photos, contacts (sync via free iCloud), and passwords.
Accept the limitation that a complete, restorable system backup requires either Apple's tools (which won't go to an external drive) or third-party software.
There is no hidden, obscure, free method that bypasses Apple's restrictions. If a full back up iPhone to an external hard drive is essential, you will need to accept either using iTunes with a workaround with a free tier.