I have a HDD with a strange behavior. This is a data drive. Everytime I start my system, when I access this drive the first time, Windows ask me if I want to format it. This is a typical NTFS boot sector problem, so I fix it with the backup boot copy by using "testdisk". This happens either I plug it as an external USB or as a internal SATA drive However this is becoming annoying and I would like to understand why. any idea?