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Hi-I have a MacBook Pro with Drive Pulse activated (Drive Genius software). My computer is over 3 years old. For about 2 months now, every 2 weeks or so, I get a critical error warning about my internal hard drive. This has been successfully fixed with Disk Warrior but it keeps coming back. I got a different warning this morning-3 bad blocks were found. I have those 2 utilities in addition I have Tech Tool Pro. What I am wondering is: is my hard drive on it's way out? It's a 500GB, 2.53 GHZ, Intel Core 2 Duo. I booted up Disk Utility and it said nothing was wrong. Can any of these utilities I have successfully repair bad blocks? Just wondering what the course of action is I need to take so that I don't lose any downtime. Thanks so much for any help for this somewhat techy grandma! Judy