I am using a 1TB WD Mybook to store my backup files for more than a year (using simple copy & paste method). It is now almost full at about 913 GB. Recently, when I used adobe bridge CS3 to open files in a sub-sub folders (f:\notebook\2011_02_28), I encountered some problems ie. some of the files in folder 2011_02_28 cannot be read. When I exited the program and re-opened adobe bridge again, I noticed that all the files and folders under the sub-folder f:\notebook (there are hundreds of folders & thousands of files here, approx 500GB) disappeared I checked the filesize used for my WD Mybook and it says 913GB which suggests that these files must have hidden somewhere in Mybook. I can read the files of other folders/subfolders stored in Mybook.
I would appreciate if if someone could advise me on how to recover these files? Thank you.