I recently cloned my HDD to a SSD. So now I've got 2 disks named "local disk", however with different drive letters. I want to wipe the HDD so I can use it for storing other files. I have tried going to disk management and formating, but the format is greyed out. I have also tried using the commandoprompt, but that didn't work either. When I right click on the drives in this pc an option to format pops up. I want to know if this option does the same as it does in disk management and if it is safe to use.