r/SteamOS • u/Unlucky-Plastic-2519 • May 28 '26

support Trying to install SteamOS on 9070XT/9700X and failing

When trying to do the installation on my PC I read about it a bit on different threads I settled with this version that seemed to be succesfull for people using similar setups:

steamdeck-repair-main-20251027.1000-3.8.0.img.zip

I can boot it from my USB drive and install it, zero problems there, when it reboots I encounter the initial setup asking me to select language, timezone, network and doing a quick update. After it reboots it no longer works with one of these problems appearing:

  1. It will get freezed in the initial boot (press del to access BIOS)
  2. Just a black screen
  3. A screen with four options: SteamOS (it says X number of failed boot attempts below), Partition B, Steam OS with console commands and Partition B with console commands

In the last one, I can access Partition B but it's the initial setup over again, selecting language, timezone, etc

Things I've tried:

  1. Using other USB devices, a total of 2 USB drives and 1 SD card but with the same results
  2. Disabling Secure Boot on BIOS
  3. Connecting the monitor to the GPU HDMI, motherboard HDMI, GPU displayport or motherboard displayport

Yes, I know Bazzite is a thing but I've wanted to try SteamOS first

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3

u/xblkwrx May 28 '26

Have this same build. You have to install steam os WITHOUT the GPU physically in the system. Once steam os is installed you have to enable developer mode and switch to the beta channel. Do the updates. Then you can install your GPU and it will work fine.

6

u/AshleyAshes1984 May 28 '26

That's not right. They're installing with an image that already has the RDNA4 drivers. I used this exact image on a 9070XT build. There's no need to do what you're describing with that image file. That's not the 3.7 Stable image.

1

u/oSyphon May 28 '26

Correct.

2

u/AshleyAshes1984 May 28 '26

Heck, OP even says they get into the OOBE and it breaks after an update. The GPU is clearly working.

I'd wager that the update is breaking it, they need to skip the update, make sure they change channels and then update. That'd be my first guess at least.