Avoid changing names of OS X home folder directories
The user's home folder in OS X contains a number of default directories including the Documents, Downloads, Desktop, Library, Movies, Music, and Pictures folders. While these locations do not have to be used to store your files, even if you rarely use these folders to store your files we recommend you do not rename or remove them.
OS X should have default permissions settings on these folders that prevent them from being inadvertently renamed; however, if you migrate your system, restore it from backup, or purposefully change permissions, then this restriction might change and allow you to rename the … Read more