There have been developments in enabling access to the RSX through the Linux kernel and the X Window System.
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However, Sony included an option in the XMB menu soon after the PlayStation 3 launched that allowed booting into Linux from the hard drive or from a Live CD that the distributor's kernel would boot.
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OtherOS was a feature available in early versions of the PlayStation 3 video game console that allowed other operating systems, such as Linux or FreeBSD, to be installed on the system.