Here is the solution:
The problem isn't that the folder is Read Only. Rather, because your folder was created on a different
installation of Windows you no longer have NTFS security permissions to access (read) the folder.
Correct this by following these steps to take ownership and then grant yourself full access to the folder.
1.Right-click the folder > Properties
2.Security tab > Advanced
3.Click Change to the right of Owner
4.Enter Users (user name you used when installing Windows) into box and click check names then OK
5.Enable the checkbox Replace owner on sub-containers and objects then click Apply
That should fix it at this point item 5, however see below if problem continues:
6.If prompted that You do not have permissions to read... click Yes
7.Completely close out of the Advanced Security Settings dialog
8.Right-click the folder > Properties
9.Security tab > Edit...
11.Enter Users into box and click OK
12.Enable the Full Control checkbox then click OK