hi guys need to know how to get rid of windows installation file. acutlly i have isntalled new window on harddrives connect the pc which was runing already windows.
Reboot your computer with the other hard drives containing the windows 7 partition.
When starting up into windows post, hit F8, you will come across a screen where you had prevoius windowd 7 installation installs.
Pick the one that is currently active and hit f8, choose to boot into safe mode.
Next you boot into and login to your account as the admin.
Click the windows orb and choose msconfig, look at your startup items and find the one that may os or systems.
You should see a list of windows 7 entry, choose the ones that is not active and you plan not to use anymore and delete.
Save the settings and reboot for the final time, whichever hard drive may have had the last windows 7 install, make sure to do a full format.
That way you know its gone, your drive will be ready to be slaved as a data back up storage device or doing other things for linux distros.