How do you delete windows 7 files

How do I delete Windows 7 files/folders from an old hard disk I no longer use for booting from.
I cannot delete these folders:
Program Files, Program Files(x86), ProgramData, Windows.

I get this error msg when I try to delete the above:
"You need permission to perform this action.

You require permission from TrustedInstaller to make changes to this folder"

Also I cannot delete any protected operating system files/folders, it says I need permission from the administrator. I am the administrator and there are no other user accounts on my computer.

Hello !!

You could Take Ownership of the File then delete it. Make sure your not deleting anything that is important for the working. Follow this Tutorial Take Ownership Shortcut - Windows 7 Forums

Hope this helps,
Captain

The drive I want to delete all windows operating system files/folders from is no longer used as a boot disk, as I use another different hard drive for that.

So deleting anything from the drive shouldnt b a problem even if there is important files, because the disk is no longer the boot hard disk.

Are you sure it is no longer used as a boot disk?

Perhaps attach a snipping tool picture of your disk management window using the paper clip. There might be a situation where a partition on the old drive is still involved in your system.

Yes im positive that this hard disk is not used for booting from.

here is my situation, I have 2 hard rives:

Hard drive 0 (raptor HDD): Windows 7 - Use this to boot from, store all programs, games etc.

Hard drive 1 (SATA HDD): Also has Windows 7 Installed - Use this HDD to store media. Does not boot from this disk, nor do I have an option to, at system startup.

Now I want to delete all windows operating files/programs, system files etc etc from Hard disk 1, as it is not needed, it does not boot from that disk. In essence I want to uninstall windows 7 from Hard drive 1.

Hello !!

As I mentioned before you might need to either Login under Build-in administrator or Take Ownership and then try to delete those file. Follow this Tutorial to enable Build-in administrator Built-in Administrator Account - Enable or Disable - Windows 7 Forums and Take Ownership Shortcut - Windows 7 Forums if that didn't work then login under Safe Mode and delete them from that location. If it's Windows.old folder then check this article Windows.old Folder - Delete - Windows 7 Forums

Hope this helps,
Captain

hi thanks, I will try out those tutorials. BTW it is not windows.old on hardisk 1, because it had windows 7 installed on that fresh.

Hello !!

The Last tutorial is only if you have Windows.old folder if not just check the first two Tutorials !!

- Captain

Apologies for any inconvenience, it seems another moderator accidentally deleted this thread. I've restored it.

Originally Posted by Mitchell_A

Apologies for any inconvenience, it seems another moderator accidentally deleted this thread. I've restored it.

Thank You Mitchell !!