Upgrade your Xbox storage to make space for Call of Duty: Modern Warfare 4

Call of Duty: Modern Warfare 4 is almost ready to leave early access as its October 23, 2026 full release rapidly approaches.

However, as with most AAA Xbox titles these days, it's going to take up a huge chunk of your console's storage space, as its campaign mode alone requires 137GB to install.

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While this isn't as extreme as Call of Duty: Modern Warfare (2019)'s 219GB requirement (without Warzone), it's still a massive number that will only get larger once Call of Duty: Modern Warfare 4 adds its multiplayer modes after leaving early access.

So, we've scoured the web for the best Xbox Series X|S storage expansion devices to help you fit Call of Duty: Modern Warfare 4 onto your Xbox Series X|S while leaving more for upcoming Xbox blockbusters like Grand Theft Auto 6.

Also note that when Call of Duty: Modern Warfare 4 launches, you will be able to uninstall what you want to reclaim space. For example, you can uninstall the single-player campaign once you're done with it and still be able to play the game's multiplayer modes.

External hard drives

External hard drives allow you to store Xbox games and other forms of media like music and movies (depending on how you format) and transfer them to other platforms with ease via USB connections.

They can come in a variety of storage sizes (ranging from 512GB, 1TB, 2TB, and 4TB), and they're more readily available compared to Xbox storage expansion cards.

Plus, they're cheaper than Xbox storage expansion cards. However, considering the constantly rising prices of tech thanks to the ongoing RAM crisis, there's no telling how long those external hard drives will be affordable.

Do note that you can’t play Xbox games directly from an external hard drive. You need to manually transfer games from the external hard drive onto an Xbox’s internal hard drive to play them.

Plug & Play expansion cards

Plug & Play expansion cards fit into an Xbox’s dedicated expansion card slot, so they can not only store games and play them directly from the card without the need for shuffling files onto the console's internal SSD.

They're also extremely compact, so they don't take up too much desk space compared to regular external hard drives.

However, Plug & Play expansion cards are rarer and more expensive than external hard drives. Plus, you can't reformat them to store and run other forms of media, as these Plug & Play expansion cards were designed only for Xbox consoles.

Call of Duty: Modern Warfare 4

Our die-hard Call of Duty expert, Cole Martin, reviewed the campaign mode of Call of Duty: Modern Warfare 4, and judging by her reaction, it's shaping up to be a massive return to form for the series.

She calls the campaign a cinematic masterpiece for its stunning, cinematic presentation, captivating story, and thrilling gameplay filled with intense action set pieces and dramatic moments.

As for the quality of its multiplayer game modes like the much-anticipated DMZ, you will have to wait until the game launches later this week to find out, as it was unavailable during Cole Martin's review.

Needless to say, though, Call of Duty fans are about to eat good this holiday season just from the campaign alone.

Call of Duty: Modern Warfare 4 is scheduled to launch on Xbox Series X|S (with Xbox Play Anywhere support), Xbox Game Pass, PlayStation 5, Nintendo Switch 2, and PC via Windows and Steam on October 23, 2026.

Call of Duty: Modern Warfare 4's campaign mode is currently available to play in early access for players who pre-order the game's Standard or Vault Editions.

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