IRIX 6.2

IRIX 6.2 was released in early 1996 for multiple SGI desktops. The 6.x series is based on late 5.x code with 64-bit support in the OS being its major killer app. IRIX 6.3 and 6.4 are special releases of 6.2 for the O2 and Octane, Origin2000/Onyx2 and Origin 200. 6.2 is based on IRIX 5.3 code.

Major Changes

64-bit kernel support and the new n32 ABI.
Removal of all 32-bit only IRIX platforms from the supported list (i.e. R2000 and R3000 systems).
Improved system stability.
XFS file system is default. EFS no longer supported for system installs.
VNode/VFS system imported, enabling new filesystems to be more easily added.
COFF applications no longer supported.

Versioning

IRIX 6.2 uses 6.3 for the SGI O2 release, and 6.4 for the Octane, Origin 200, Origin 2000, and Onyx2 releases. These are all fundamentally the same OS with different version numbers.