This article covers how to add external storage to a PlayStation 4.
Starting with update 4.50 the PlayStation 4 can now use external drives up to 8TB for external storage for games and applications with user save files still being saved locally on the internal drive.
Note: Currently Backup Plus Hub products are incompatible, regardless of capacity.
1) Plug the drive in, then go to Settings
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2) Then Devices
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3) Then USB Storage Devices
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4) Press the X button to select the Seagate Drive
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5) Select Format as Extended Storage
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6) Select Next
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7) Select Format
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8) Once the formatting is complete the drive will now show up under Settings>Storage as Extended Storage
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Note: The drive is now setup for PlayStation 4 external storage and will be used as the default location for game and app installations. The PlayStation 4 file system is not recognized by Windows or Mac operating systems and will need to be reformatted for use with either.