How to delete your iPod or iPhone backup from your computer. Doing so might save you a bit of hard drive space. It’s also good to keep things clean if you no longer sync the device with your computer any longer.

1. Open iTunes.

2. Select iTunes > Preferences (Mac) or Edit > Preferences (Windows).

3. Select the Syncing tab.

4. Select an iPod or iPhone on the list and click Remove Backup.