There are a number of ways to reload an XP system, when our system encounters a variety of failures or does not work correctly, it is resolved through System Restore or reload, and recently a user prompts "If you change the folder extension, you may cause the file to be unavailable when you create a new file or change the name of the other document after you install the XP system."
Are you sure you want to change it? " (pictured), the emergence of such a hint that many users do not dare to try to modify, in fact, this is not what the system failure problem, as long as you do not modify the file type name or modify Folder Options, select "Hide known file type extension" can be.
1, click on My Computer, and then open the toolbar, select the Folder options inside.
2, click to view, in the hidden well-known file type extension before tick.
3, a simple two steps can be easily unable to rename the file, if the user is afraid to modify the file name caused by the file is not available, you may follow the tutorial method to hide file type extension, or modify the file do not change the file type.