IRIX 6.5.22

IRIX was a operating system created by SGI (Silicon Graphics Inc) that was based off of System V Unix. In addition, this OS had additional BSD elements. It's initial release was in 1988 and was designed to on MIPS processors. IRIX machines were typically used for visual effects in the entertainment industry and in the scientific community for several years after the fall of Amiga in the early 90s.

IRIX was the OS that introduced the XFS file system, used in some Linux distributions.

As announced in a customer letter around August 2003 this release will be the last to support some of the older machines. This includes Challenge, Indigo, Indigo 2, Indy, Power Challenge, Power Indigo 2, Power Onyx, Onyx.

Also, IRIX 6.5.22 is the last version of IRIX 6.5 available in maintenance and feature stream versions.

Product type
Release date
Minimum CPU
R4000 CPU or better (except Crimson)
User interface


Download Name Version Language CPU File type File size
IRIX 6.5.22 Applications November-2003 6.5.22 Upgrade English MIPS64 CD 555.45MB
IRIX 6.5.22 Overlay 1 of 3 6.5.22 Upgrade English MIPS64 CD 480.58MB
IRIX 6.5.22 Overlay 2 of 3 6.5.22 Upgrade English MIPS64 CD 387.84MB
IRIX 6.5.22 Overlay 3 of 3 6.5.22 Upgrade English MIPS64 CD 358.71MB


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