Guide

Steam Deck Storage Guide: How to Move Games Between SSD and microSD

A practical Steam Deck storage guide covering SD-card formatting, adding storage locations, moving installed games between internal SSD and microSD, and the save-data assumptions you should not make without checking first.

Source note

Valve support pages checked August 28, 2026. Storage menus, SD-card handling, and Steam move workflows can change; confirm current details in Valve’s support pages before relying on any step below.

1. Quick Answer: can you move Steam Deck games between SSD and microSD?

Yes. Valve’s current support pages say you can use Steam’s Storage tools to create another library location and use the Move feature to move installed games to a different location on the same computer. On Steam Deck, Valve also says you can manage built-in storage and connected storage from Steam > Settings > Storage, and that microSD cards must be formatted before use.

[Source-backed]

For most Steam Deck owners, the practical version is simple:

• format the microSD card in SteamOS first
• confirm the Deck sees it as storage
• use Steam’s Storage tools to move installed games

That is different from moving your whole Steam installation.

[Source-backed + Editorial guidance]

2. What the Steam Deck storage setup actually looks like

Valve says Steam Deck uses built-in storage by default, and you can manage system storage and other connected storage from Steam > Settings > Storage. Valve also says microSD cards need to be formatted before they can be used with Steam Deck.

[Source-backed]

That gives Steam Deck owners two separate storage ideas to keep straight:

• Internal storage This is the Steam Deck’s built-in SSD.
• microSD storage This is expandable storage you add yourself after formatting it for Steam Deck use.

3. Before you move anything: format the microSD card correctly

Valve’s Steam Deck support page says microSD cards must be formatted before they can be used with Steam Deck. Valve’s path is:

Steam > Settings > System > Format SD card

• any UHS-I microSD card rated class 3 or better is supported
• UHS-II and UHS-III cards are expected to work, but their higher transfer speeds are not supported

4. How to add or confirm a Steam library location

Valve’s Moving a Steam Installation and Games page says you can create an alternate installation location on any drive and choose it for future installs. Valve’s current Storage workflow is:

1. open the Steam client Settings
2. select the Storage tab
3. view the default installation drive
4. create a new path with the + button
5. use that path for future installations

5. How to move installed games using Steam’s Storage tools

Valve’s current page says you can move a game’s installation folder on the same computer using Steam’s Move feature. Valve’s documented steps are:

1. make sure a different Steam Library path already exists
2. open Steam Settings
3. open the Storage tab
4. select the drive where the games currently live
5. select the games you want to move
6. click Move

6. What does and does not move with the game files

This is the section where readers most often over-assume.

Valve’s Moving a Steam Installation and Games page distinguishes between moving installed game content and moving a whole Steam installation. It also includes a save-game warning in the full-installation section: third-party games that are not saved on Steam Cloud may store saves elsewhere, such as in a Documents folder, and save-file locations can vary by game and developer.

• moving the game always moves every save
• moving the install guarantees your progress is safe
• all game data lives with the game files

7. When not to confuse moving a game with moving your whole Steam installation

Valve’s Moving a Steam Installation and Games page contains a separate section for moving the entire Steam installation. That section includes stronger warnings:

• have your Steam login details ready
• back up the steamapps folder first
• do not install Steam to an external hard drive because of potential performance issues
• verify integrity of game files afterward if needed

That is a broader desktop Steam migration process, not the normal Steam Deck answer for “I need more space.”

[Source-backed]

For this PocketPlay guide, the distinction is important:

Moving a game: normal Steam Storage workflow

Moving the whole Steam installation: separate, broader process with additional implications

PocketPlay editorial guidance: if your goal is only to free up space on Steam Deck, stay with the ordinary Storage-tab workflow unless Valve’s basic move steps no longer solve your problem.

The ordinary Move feature is the narrower workflow to consider first when your goal is simply to free space on Steam Deck.

8. A simple storage-cleanup order for Steam Deck owners

PocketPlay editorial guidance:

1. Check how much free space you actually have.
2. Format the microSD card if it is new.
3. Confirm the card appears in Steam’s Storage tools.
4. Create or confirm the alternate library location.
5. Move the biggest non-urgent installed games first.
6. Leave active troubleshooting or recovery steps for later unless something is actually broken.

This order keeps the article focused on low-risk storage management instead of turning it into a reinstall or recovery workflow too early.

If the Deck has broader storage or OS issues, the more relevant handoff is /guides/steam-deck-recovery-guide.

9. Common mistakes to avoid

• Assuming a new microSD card is ready immediately Valve says it must be formatted first on Steam Deck.
• Trying to move games before creating another library path Valve’s current Move workflow assumes the destination path already exists.
• Confusing game movement with full Steam migration Those are separate workflows in Valve’s documentation.
• Treating game movement as a save-file guarantee Valve’s full-installation warning makes clear that some non-Steam-Cloud saves may live elsewhere.
• Turning a storage workflow into a shopping decision too early This guide is about moving installs safely, not ranking card brands or promising speed gains.

10. FAQ

11. Sources

• Valve Steam Support, `Moving a Steam Installation and Games`(Primary source checked August 28, 2026.)
• Valve Steam Support, `Steam Deck - Basic Use & Troubleshooting Guide`(Supporting source checked August 28, 2026.)