Make an Undeleteable Folder in windows

It often happens that some of your folders contain very important data and you delete those folders by mistake. So why not make such folders UNDELETEABLE & avoid such mistakes..! [Works with Windows XP|Vista|Seven]
1]- Open CMD ( Type in Run option, the command 'cmd' or navigate to All Programs->Accessories-> Command Prompt)

2]- Change the directory to where you want to create the folder.Type 'cd..' to exit the current directory. As an example i will be creating the folder in C:, so i will use the 'cd..' command twice to navigate to C:

3]- Type md\lpt1\\ and press enter, the folder now will be in your C:

4]- If you try to delete it, it wont delete. This works on all version of windows.

5]- If you want to delete it just go to 'CMD', navigate to the directory and type
rd\lpt1\\ and press Enter.

Lock a folder in windows XP without any software

To Lock a folder in windows XP without any software. Follow the steps Below.

1. Make a Folder in C drive rename it as "abc" without quotes.
2. Now open Command Prompt from Start Menu.
3. Type "attrib +s +h C:\abc" without quotes and press enter.
4. This command will Make your folder invisble and it can not be seen even in hidden files and folders
5. To make it visible again type "attrib -s -h C:\abc"
6. You can lock any other folder also by changing the location C:\abc to address of your folder.