==========================================================================
The checksum's (found through sum -r) of the files that you have received
(other than this README) are as follows:

61864      2 patchSG0002271
42284    147 patchSG0002271.eoe_sw
13474      2 patchSG0002271.idb
==========================================================================



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       1.  Patch_SG0002271_Release_Note

       This release note describes patch SG0002271 to IRIX 6.2.
       Patch SG0002271 replaces	patch SG0001825.

       1.1  Supported_Hardware_Platforms

       This patch contains bug fixes for Indy XZ systems.  It can
       also be installed on Indigo2 Extreme or XZ systems, and will
       not cause any problems, but the bugs it fixes are not seen
       on those	systems.  The software cannot be installed on other
       configurations.


       1.2  Supported_Software_Platforms

       This patch contains bug fixes for IRIX 6.2 (version
       1232792137) and IRIX 6.2	with IMPACT 10000 (version
       1233007732).  The software cannot be installed on other
       configurations.

       1.3  Bugs_Fixed_by_Patch_SG0002271

       This patch contains fixes for the following bugs	in IRIX
       6.2.  Bug numbers from Silicon Graphics bug tracking system
       are included for	reference.

	  o Indy XZ systems may	miss bytes when	reading	from the
	    serial ports while complex graphics	applications are
	    active.  (Bug #456421)

       1.4  Subsystems_Included_in_Patch_SG0002271

       This patch release includes these subsystems:

	  o patchSG0002271.eoe_sw.gfx


       1.5  Installation_Instructions

       Because you want	to install only	the patches for	problems
       you have	encountered, patch software is not installed by
       default.	 After reading the descriptions	of the bugs fixed
       in this patch (see Section 1.3),	determine the patches that
       meet your specific needs.

       If, after reading Sections 1.1 and 1.2 of these release
       notes, you are unsure whether your hardware and software
       meet the	requirements for installing a particular patch,	run
       inst.  The inst program does not	allow you to install
       patches that are	incompatible with your hardware	or











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       software.

       Patch software is installed like	any other Silicon Graphics
       software	product.  Follow the instructions in your Software
       Installation Administrator's Guide to bring up the miniroot
       form of the software installation tools.

       Follow these steps to select a patch for	installation:

	 1.  At	the Inst> prompt, type

	     install patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 2.  Initiate the installation sequence. Type

	     Inst> go

	 3.  You may find that two patches have	been marked as
	     incompatible.  (The installation tools reject an
	     installation request if an	incompatibility	is
	     detected.)	 If this occurs, you must deselect one of
	     the patches.

	     Inst> keep	patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 4.  After completing the installation process,	exit the
	     inst program by typing

	     Inst> quit



       1.6  Patch_Removal_Instructions

       To remove a patch, use the versions remove command as you
       would for any other software subsystem.	The removal process
       reinstates the original version of software unless you have
       specifically removed the	patch history from your	system.

       versions	remove patchSGxxxxxxx

       where xxxxxxx is	the patch number.

       To keep a patch but increase your disk space, use the
       versions	removehist command to remove the patch history.

       versions	removehist patchSGxxxxxxx











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       where xxxxxxx is	the patch number.

       1.7  Known_Problems