Thanks for a reply. If I understood correctly, you claim that HDD performance is exactly the same like it was 2 years ago when I bought laptop (despite formatting and moving data)? Secure Erase is only for data recovery prevention and it can't degrade HDD performance, right?
I asked because I plan to perform Windows 7 clean install and this hard drive sustained many full formats. I am curious if that would affect HDD performance and life? Do you recommend full format again or should I go with quick format?