Should I be concerned, I bought used hard drive on amazon that was appose to be opened but never used, just installed it and went to install windows and noticed 2 partitions. I canceled the install and booted puppy Linux to see if their was anything on the partitions and sure enough, the first partition was a dell recovery partition, and the second partition was the main windows/use partition. Apparently the drive was used and the sell never wiped the drive and left all the files intact including personal documents and pictures. I checked the drive and it appears to be in %100 working condition.