Steam OS UEFI Workaround Method 4

Disclaimer:  This method has not yet been tested by me and is stressed to be done at your own risk


In this method, some have been able to successfully install SteamOS by copying “over top” an existing bootable USB drive of the Debian “Wheezy” Linux distribution.


  1. Make a bootable USB drive of Debian Wheezy using any of the popular methods, including unetbootin.  (a video tutorial can be found here.)
  2. Once finished, do not reboot your PC, and open the drive’s contents in your file manager
  3. In another file manager window, extract the contents of the Custom Installation zip file for Debian found here.
  4. Copy over top, the contents of the extracted file in step 3 into the existing contents of your zip drive.  Choose to replace or merge any existing files.
  5. Boot up the USB drive in your new PC (be very cautious of wiping your hard drive!)
  6. Install SteamOS using the guided installer.

Post installation

  • These steps are VERY important, as this installation method is of the type Valve considers a “Custom Installation.”

  • After installation is complete, log onto the resulting system (using the Gnome session) with the predefined “steam” account.  The username is “desktop” and the password is “desktop”
  • Open the “Home” folder and run the file “”  Choose to “Run in Terminal.”  This is paramount for big picture mode.
  • Enter your sudo password of “desktop”
  • Installation will commence and reboot the PC.  (you may have to reboot twice)
  • Note: if for some reason the reboot fails to find the kernel, hit “return” and choose the 1st default GRUB boot entry.  The OS will then load.
  • After picking “Gnome” and logging on with the Steam account (password “steam),  hit the “Return to Steam” shortcut on the desktop.

VirtualBox Users 

To boot from USB, download this[5] , extract plpbt.iso and boot from that, it’ll allow a USB boot. Note that ‘Enable USB 2.0 (EHCI) Controller’ must be DISABLED.


Issue 1:
“I am stuck on now is “Run steam, accept the EULA, and let it bootstrap. Logoff the steam account”.”

Solution 1:
run steam from a terminal for it to work, once I was on the login screen, I quit steam then logged out the steam user, then jumpped into desktop and executed the script.

Issue 2:

Ran the script, it rebooted into capturing recovery partition mode then something failed and threw me into (initramfs) prompt.  I rebooted into “normal” mode again and after the loading finishes I get stuck with a black screen.”

Solution 2:
This was caused by having two screens attached. Disconnecting one of them helped.

Issue 3:
“I’ve noticed it sometimes seemingly dismounting my USB drive, not entirely sure what causes it, try it again and see if it’s any better… There may be a driver issue otherwise, I’ve only done my testing in VirtualBox.”

Solution 3:
If you Ctrl+alt+F4, the logs might explain why it’s not working.

Please leave any questions or comments  below.



About professorkaos64

Posted on 20131218, in How-To and tagged , , , , . Bookmark the permalink. 1 Comment.

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