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I do a nightly SuperDuper! clone on my MacBook Pro. Ever since updating to their latest (Lion-compatible) version, it won't do a full clone, but the logs report copy failures because of Input/Output errors. (Unfortuantely, the previous version successfully completed clones, but did not report the errors and simply did not copy the files).

Sure enough, if I try to copy the files it reports, in the Finder or via command line, it also fails. Every time I delete one of these offending files, and try to run a new clone, it finds another file that can't be copied (this has happened three times so far).

Obviously I'm thinking this hard drive is ready to crash, but is there a way to verify? Disk Utility reports no problems.

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If this problem started after upgrading SuperDuper!, I'd contact their support people about it. Try downgrading to the previous version first, to see if the problem goes away. – Eric Jul 14 '11 at 18:19
Check the SMART status of the drive for hints as to whether or not the drive's really in trouble..? – Doc Jul 14 '11 at 18:26
@Eric - I did contact them and downgrade, and as I mentioned, the clones complete, but the troublesome files simply don't copy. Support wasn't super helpful, just noted that newer versions can be more comprehensive. – shanebonham Jul 14 '11 at 19:09
@The White Phoenix - SMART status = verified – shanebonham Jul 14 '11 at 19:36
SMART status reporting isn't very reliable; I've seen obviously failing drives (incl. one that sounded like a coffee grinder) that showed SMART status = verified. Other tools (like SMARTReporter, smartctl, or Smart Utility) may be able to get more status details. My advice: freeze the current backup (to avoid backing up more damaged files), get a new drive, and migrate NOW. – Gordon Davisson Jul 15 '11 at 3:52

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