Bad boot?

[magick.crow at gmail.com]

my computer was booting and it started one of those once every 30 boot HD  
checks. It says you can press escape so my wife did. Will this do damage?  
How can I start it again? Do I need to do that? Where are the records of  
what is was trying to check? Any other things I should know about this?
Thanks!
Douglas
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