mchain
12
dban will wipe the entire drive. This means your second partition will be lost and wiped also.
Which brings up an interesting point: If this drive fails (crashes) for some reason, both partitions are certain to be lost.
Which is why best practices state a second physical hard drive should be used in case the operating system drive crashes, so you will still have your personal files backed up just in case that were to happen. Even better, a second back up of all your personal files should routinely be made to a third hard drive or other media (it’s not a backup unless two or more copies exist).
You’ll need to move/copy all your important data and files to another separate physical drive for safekeeping before you run dban. What I suspect was left unsaid was the fact that the second Win 7 install was made the way it was because you already had the second partition in place and did not want to lose your files in the second partition.
Running two partitions on the same drive is like rolling the dice over time and hoping for the best. You’ll lose all at one time or another, hard drives do fail and crash.
Solution is to back up, back up, and back up some more using different physical drives and other media; that way your catastrophe will never happen.