MP3 Write Protection USB problem.

Hello Im confused with this guys answer here, it seems to be the solution to the problem im having.

Ive insert my sony mp3 player and when I went to delete a folder i got this message:MP3 Write Protection
Ive understood the instructions upto step c)c. Highlight StorageDevicePolicies, and then create a New DWORD (32-bit) Value named as WriteProtect.

does he mean just make a new folder , rename it to StorageDevicePolicies? can somone please explain or do a short video tutorial how to do this, I cant seem to find any video tutorials on how to go about,and Im afraid
incase I ruin the pc function if i make a mistake

USB flash drive prompts with "Write Protected" message. - Microsoft Community

thank you.

this here is the model of my mp3 player:

Sony launches NWZ-B170 series of Walkman MP3 players

hello Ztruker, thats the problem im having I dont have a StorageDevicePolicies key listed.... this is what I have:

another question is if i try to fix anything in regedit can it ruin my system? is it an important place this regedit?

Hi bob.

thats what I do, drag and drop folders in the mp3 player, But this oen folder I downloaded... says this write protection thing that i cannot simply delete!

read only is unticked under attributes. I have another option which i can click which is"hidden" thats the only box i can tick, as read only is greyed out, cant tick it.