Smartmontools and disk I/O error

[Michael_google gmail_Gersten]

(renamed subject because the subject has changed)

Kleiman-ibook:Windows TM michael$ smartctl -c disk0
smartctl 5.39.1 2010-01-28 r3054 [powerpc-apple-darwin9.8.0] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF READ SMART DATA SECTION ===
General SMART Values:
Offline data collection status:  (0x00)	Offline data collection activity
					was never started.
					Auto Offline Data Collection: Disabled.
...
Total time to complete Offline
data collection: 		 ( 410) seconds.
Offline data collection
capabilities: 			 (0x7b) SMART execute Offline immediate.
					Auto Offline data collection on/off support.
					Suspend Offline collection upon new
					command.
					Offline surface scan supported.
					Self-test supported.
					Conveyance Self-test supported.
					Selective Self-test supported.
...

Kleiman-ibook:Windows TM michael$ smartctl -o on disk0
smartctl 5.39.1 2010-01-28 r3054 [powerpc-apple-darwin9.8.0] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF ENABLE/DISABLE COMMANDS SECTION ===
Error SMART Enable Automatic Offline failed: Operation not supported
Smartctl: SMART Enable Automatic Offline Failed.

Kleiman-ibook:Windows TM michael$

Alright, it looks like this drive has automatic offline "testing"
(data collection), but it won't turn on.
Is this my error, drive error, or what?