After Steam finishes installing, your system will automatically reboot and create a backup of the system partition.Once you are connected to the internet, close this UI and Steam will install itself. If you do not have an internet connection (for instance, if you need to connect to a WiFi access point) you will get a popup telling you this.Ĝlose the popup and you will get the network configuration UI where you can set up your network. If you have an internet connection, Steam will automatically install itself. At this point an internet connection is required. After installation is complete, the system will reboot and automatically log on and install Steam.The rest of the installation is unattended and will repartition the drive and install SteamOS.Selected 'Automated install (WILL ERASE DISK!)' from the menu.If there is no UEFI entry, you may need to enable UEFI support in your BIOS setup. Make sure you select the UEFI entry, it may look something like 'UEFI: Patriot Memory PMAP'.(usually something like F8, F11, or F12 will bring up the BIOS boot menu). Boot your machine and tell the BIOS to boot off the stick. Put the USB stick in your target machine.Unzip the SteamOS.zip file to a blank, FAT32-formatted USB stick.WARNING: Both installation methods will erase all content on the target computer Automated Installation

Virtualbox no bootable medium found mac