How to batch modify file attributes in Win7

Q: When I used Windows XP, because the word on the monitor was small, I downloaded the novel to the local hard disk, then modified the source file, and then enlarged the font. Now I bought a new computer, pre-installed Windows 7 Home Basic Edition, but found that the file properties have been read-only, can not be modified, how to modify the file properties in Windows 7 Home Basic Edition?
A : If you have a lot of source files, assume that they are placed in the D:books path, you can click “Start →Accessories", find “command prompt”, right click and select “ Run as administrator. Open a command prompt and type the following command:
attrib -rd:books*.*
You can change the properties of these source files in batches.