For my smartphone, I set my email attachments to be stored onto the storage
card. One day, I dropped my phone and the storage card got ejected. The
smartphone created a "Storage Card" folder in the phone memory when it could
not find the actual physical storage card. When I inserted the storage card
back into the smartphone, the storage card becomes "Storage Card2"

Checking through some forums, I found out how to get the physical storage
card back as "Storage Card" by renaming the folder in the phone memory to
another name which in my case is "Storage Card3".

However, I was not able to delete this "Storage Card3" folder as there are
sub folders. The sub folders that cannot be deleted have the desktop.ini
file in them with the hidden and system attributes. I used Total Commander
to change the attributes but was not successful.

Any advice?

Thanks.