I connected my old PC's HDD external drive to my laptop. (I have a connector to connect it. Since it requires an additional voltage to run, I've all the necessary tools and I am able to connect it to my laptop.)
However, it isn't showing up in my PC. I opened up Disk Management console by right clicking on "This PC" and then "Manage", and I found the disk is showing under the basic drive, but it's dynamic and invalid.
Help me to access to it, since I want to access the folders of the HDD.