Trouble setting up 64 GB steamdeck


New member
Jul 7, 2022
My e-mail to Steamdeck customer service (please see below)

I purchased a steamdeck 64GB and I purchased eldenring. I Purchased a Lexar PLAY 1TB microSDXC and inserted it into my steamdeck. I keep getting a message saying internal drive not enough space. I thought me purchasing a 1TB microsdxc would give me enough storage to purchase and Download games. What can I do to this resolve this? My steamdeck is only 64GB

Customer service response:
Thank you for reaching out to us.
We're sorry to hear you're having trouble with your Steam Deck.
Please verify that their SD card is a compatible format whether another compatible machine can read the SD card. Please note that any UHS-I (class 3 or better) microSD card is supported, yet Steam Deck does not support UHS-II.
Upon receiving your reply, we'll assist you further. We appreciate again for your cooperation.

My response: I did verify and yes my SD card is a UHS-I-card. Down below is the description of my SD card. What can I do now to make my steamdeck work?

Customer service response:
What did you set as your default storage device? It looks like the game may have been installed to your SSD, which may not have enough space to accommodate the full installation.
Can you try uninstalling the game completely, setting your SD card as your default in Steam > Settings > Storage, and trying the installation again?

My response:
I tried using both the internal and external drive as default I am still not able to install Elden Ring. I returned my 1TB San disk and now I am currently using a 512 GB San disk. I am getting a message saying that I don’t have enough storage in my internal or external drive to download game. I got the steam about a month ago and I haven’t been able to play it because of this issue it is quite frustrating. Thank you
I also installed Dota 2 on my steamdeck (please see photo that I attached) But the game won’t play. It just says starting launch but the game won’t actually play.

Has anyone experienced similar issues? Any recommendations? Thank you Steamdeck family


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Well-known member
Feb 3, 2022
Hello and welcome!

Your problem seems to be the exact same like this one I mentioned in this post.

Are you sure you didn't buy a fake micro SD-card, most likely from a marketplace vendor ?
One weird thing is your 1tb is named "External Drive ()" while the 512gb card is "MicroSD Card" (which is the same for me in my Deck). Good thing you sent it back.

Did you try to put the 512gb card in your computer and does it work flawless there? Can you write like 450gb on it without an issue?
You could try to reformat the card to work on the computer, test it there. If you are sure, it works, shut off your Deck completely, put your card inside the Deck, reboot it and go straight to the setting to format the SD card for the Deck. If the card is good, you should be able to use it like you already did. Set it to "MAKE DEFAULT" and download games straight onto it.


SDC Owner
Staff member
Dec 15, 2021
H2testw can be used to verify the SD does indeed have the correct size or not.


SDC Owner
Staff member
Dec 15, 2021
What is the H2testw?

It will write to your SD card until its full to tell if the adverted capacity is real or not.


Active member
May 23, 2022

It will write to your SD card until its full to tell if the adverted capacity is real or not.
yep basically it's a tester for checking if the cards capacity checks out.
because let's face it, in this day and age scammers sometimes swap out cards like these for lesser quality ones.
or, it's possible that the card you got is just bad or corrupted.

I also believe in something called the silicon lottery. 😅 I think it happens with other stuff too.
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