How to hard reset HTC Desire to factory setting, some call it factory reset.

I have an HTC Desire Z, I had to hard reset the phone couple of times because of all junk apps I install.

Steps to hard reset, may be helpful for you…

HARD RESET WILL WIPE ALL YOUR PERSONAL DATA, so please do a backup before you start

Turn off your phone,
1. With the phone turned off, press and hold the VOLUME DOWN button, and then briefly press the POWER button.
2. Wait for the screen with the three Android images to appear, and then release the VOLUME DOWN button..
3. Press VOLUME DOWN to select CLEAR STORAGE, and then press POWER.
4. Press VOLUME UP to start the factory reset.

I think this is different from what you do thorugh the ‘factory reset’ menu option in setting. ( I am not sure though)