Note: This is useless because there's no/minimal graphics acceleration. I'm doing it because I can.
You will need:
A Linux distro installed somewhere (even in a VM). Yes, you could probably create the ISO with PowerISO or similar but why bother?
The latest version of VirtualBox
Get a copy of SteamOSInstaller.zip from http://repo.steampowered.com/download/S ... taller.zip or magnet:?xt=urn:btih:1e4dae83371ba704d5d89e1828068ef0c4151e32&dn=SteamOSInstaller.zip&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80%2Fannounce&tr=udp%3A%2F%2Ftracker.publicbt.com%3A80%2Fannounce and check the file against http://repo.steampowered.com/download/SHA512SUMS
Extract it to a folder such as ~/steamos/ (there's no root folder in the zip so don't extract it to your home!)
use genisofs to generate an ISO genisoimage -o steamos-1.0-uefi-amd64.iso -r -J ~/steamos/
Create a new VM in VirtualBox, set it to use UEFI in Settings -> System
(Optional) Move the CD to SATA interface 1 along with the VDI in Settings -> Storage
Attach the steamos ISO you created to the new VM and boot
Boot the VM
Run through the install - by default it's automated
Reboot and boot into the Recovery option (second in GRUB) - if you get stuck in the EFI shell, run fs0:\EFI\steamos\grubx64.efi to get back to GRUB
Uninstall all nvidia related packages - get a list by running dpkg --get-selections | grep nvidia
remove the 55-nvidia.conf file from /usr/share/X11/xorg.conf.d
Run dpkg-reconfigure xorg-xserver
Give the "desktop" user a password via passwd desktop so you can use sudo after reboot
Read http://bugs.debian.org/cgi-bin/bugrepor ... =691169#10 and wonder if stable is really stable and then run VirtualBox's built-in guest additions installer instead. (Use the menu option and then mount /media/cdrom, sh /media/cdrom/VBoxLinuxAdditions.run)
Reboot or restart the X server
Login at the desktop user using the password you set - I'm not sure what I've done to the autostart stuff yet
Run Steam! (yay 210 meg update...)
Текст на инглише, считаю что у линуксоидов не должно возникать проблем с данным языком =)