I mean, I want to delete the original files, not the clone ones, I didn't express myself correctly. The cloned hard drive is the new one with the OS, I want to delete the old one. Can I just simply delete them?"The clone" should just be a file or files on the other drive.
you should just be able to delete them as normal files.
Thank you, I will try it now.First verify, your system can boot with only new drive connected.
After that clean old drive, repartition and reformat it.
diskpartlist diskselect disk x(Make sure, you select old disk. Data on selected disk will be lost.)cleancreate partition primaryformat fs=ntfs quickexit