Hi and thanks for reaching out. My name is William. I'm a Windows technical expert. I'll be happy to help you out today.
To address the issue with your drives appearing a read-only: this is a common area of misconception. For starters, read-only applies to files, not folders or drives. When you toggle that setting, you are either applying the read-only attribute or removing it to/from all the files in that folder.
Here is the important part: right-click any folder and you will see that the read-only box is "filled". This is by design, it is indicating to you that you need to either check or un-check the box to apply\remove the attribute.
I have unchecked the box multiple times and let it run through the process of making all the sub folders and files also not read only, but everytime I go back to it the folders still indicate read only.