This can be done from the BIOS boot menu, which can be accessed by tapping either the DEL, F8, F10, F11, or F12 keys once the computer is powering on (depending on your system). Power down your computer and boot to the USB drive. Unzip the file and extract its content to the root of your flash drive.Ĥ. On OS X, enter the Utilities folder in your Applications list, click on Disk Utility, select Erase, and choose MS-DOS (FAT).ģ. On Windows, right-click the drive, select format, and choose FAT32. Connect your USB drive to your computer and format it. Download the official custom-install SteamOS file from Valve's Web site.Ģ. Follow these steps to install SteamOS using the custom installation method:ġ.

The process is slightly more complicated than the first, but it also gives advanced users the power to tweak certain settings. If that's the case, you should try the custom installation method. While the default method is the easiest way to install SteamOS, some people have reported running into problems. Remove the USB drive and power on your computer. Once installation is complete, press Enter to shut down the machine.ħ.

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