how to detect corrupted file

[frederic chaume]

Hi all

Following the crash I had last week, I discovered 3 corrupted files (in 
the same album) . Hopefully it was Jpeg and I have been able to genrate 
them again.
But I'm wondering if there could be other corrupted files over the 
hundred of thousands of files I have under DK. So I would like to know 
if there is a way to identify them so I can recover them from my backup

here,  corrupted means the thumbnail doens't show the picture but a 
green logo and effectively when I click on it, nothing is displayed

thanks for your help
Frederic