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renaming a file,need to give the extension also,why?


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#1 evergreen1

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Posted 17 October 2013 - 12:10 PM

using windows xp system.when I rename a file ,say a text file, it demands me to put the extension .txt also. otherwise it will warn me that" if you change a file name extension, the file may become unusable".  why this warning? earlier on this machine i used to change the filename without any such warning. the warning will come irespective of he file extension(.txt,.mp3,.mp4). can anybody suggest a method to overcome the warning?


Edited by evergreen1, 17 October 2013 - 12:11 PM.


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#2 Roodo

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Posted 17 October 2013 - 12:55 PM

Open my computer, go to tools>Folder Options>View

Check 'Hide extensions for known file types

Click apply, and OK



#3 quietman7

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Posted 17 October 2013 - 08:44 PM

Windows on File rename gives warning – "If you change a filename extension,the file may become unusable"

This simply happens because when user tries to rename the file when the extensions of file are shown, he/she forgets to give the extension and gives only new filename. This makes the file to become un-recognized by windows (or any operating system)...The simplest way to fix such issue is to make the file extensions hidden. When you do that, windows will take care that the file extensions are not changed while renaming the file.


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#4 evergreen1

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Posted 03 February 2014 - 07:08 PM

Open my computer, go to tools>Folder Options>View

Check 'Hide extensions for known file types

Click apply, and OK

thanks a lot for the reply.it helped me.



#5 hamluis

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Posted 03 February 2014 - 07:28 PM

The file extension...is what gives the file identification as to type...the first part of the filename can be the same for 100s of different types of files, but it's the file extension which allows identification among multiple files with the same non-extension name.

 

Without the file extension, using a given file becomes chaotic..which is why the extension is requested during the rename operation.

 

Louis



#6 quietman7

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Posted 03 February 2014 - 07:45 PM

And that is why Windows hides the extensions by default.
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#7 evergreen1

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Posted 03 February 2014 - 08:00 PM

The file extension...is what gives the file identification as to type...the first part of the filename can be the same for 100s of different types of files, but it's the file extension which allows identification among multiple files with the same non-extension name.

 

Without the file extension, using a given file becomes chaotic..which is why the extension is requested during the rename operation.

 

Louis

the reason for the post is this

earlier when i a rename a (.mp4 file for example) i needed to rename the filename only. the extension automatically came. but now when i reenter the filename deleting existed one i need to put the extention also manually.  i needn't had to do it earlier. delete all the filename with the extention and put the new one without the extension i used to get it operational,. likewise when i create a new text file, and then if i rename it it says to put the extension also manually. this is annoying and time consuming. the question under the post occured because of this different experience. thanks


Edited by evergreen1, 03 February 2014 - 08:00 PM.


#8 quietman7

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Posted 03 February 2014 - 08:19 PM

It can also occur if you are using an alternative File Manager other than Windows Explorer.
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