If you want to return your iPad to its original, factory settings, you have two choices. First, you can reset your iPad but leave all your data (photos, video, music, and so on) intact. Second, you can wipe out everything including anything you have saved such as photos or apps that you've downloaded.
If your iPad starts acting weird and restoring doesn't do the trick, then you might need to completely reset it while preserving any data you have stored on it. To reset your iPad while preserving all your data on it, follow these steps:
From the Home screen, tap Settings. The Settings screen appears.
Tap General. The General settings screen appears.
Scroll down and tap Reset. The Reset settings screen appears, as shown in Figure 10-4.
Tap Reset All Settings. A Reset All Settings dialog appears, asking for confirmation before resetting your iPad.
Tap Reset or Cancel.
Press the Home button.
If you plan to give away or sell your iPad, you may want to wipe out all your data and return your iPad to its original, factory condition (minus any minor blemishes you may have made on the iPad's case while using it). To reset and erase your iPad completely, follow these steps:
From the Home screen, tap Settings. The Settings screen appears.
Tap General. The General settings screen appears.
Scroll down and tap Reset. The Reset screen appears.
Tap Erase All Content and Settings. An Erase iPad dialog appears, asking for confirmation before resetting and erasing your iPad.
Tap Erase or Cancel.