code: 9ferno

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added comment on checksum

--- a/appl/cmd/disk/kfs64.b

+++ b/appl/cmd/disk/kfs64.b

@@ -3034,6 +3034,13 @@

 	return 0;

 }

+# this checksum use is useless and slows down processing as

+#	the disks do the crc check at the block level anyway.

+#	Leaving it in as I cannot use the cksum[4] bytes for anything

+#	else and they would be wasted for padding.

+#	might as well use those 4 bytes for something, maybe help catch

+#	memory errors?

+#	check the inferno.notes on the relevant discussion about this too.

 # using an array of big instead of int to keep it fast

 #	ignoring the last 4 bytes before tag from the checksum calculation

 # using 1's complement addition from