I bought a used 2TB internal SATA drive for my computer. I was kind of stupid to not reformat the drive completely, because after installing and storing a TON of programs and files in it, I decide to put a Windows backup in it. Windows backup tells me the its a dynamic disk so I can't make the backup. I go to the disk manager to find that not only is it a dynamic disk, but it has 3 partitions all pointing to disk F:. I tried to delete 2 and extend the first one, but it said the disk can't be unmounted or something. I want to know if this will cause a problem for me in the future, besides the Windows backup.