Restore user permissions

I accidentally deleted all users/permissions from Volume M:  through the Properties\Sharing tab.  Now, all access is denied.  I tried to restore them with icacls, but it fails, even from safe mode.  Is there a way to restore access to the volume?  Thanks.
sjw601Asked:
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David AtkinConnect With a Mentor Technical DirectorCommented:
Take ownership of the drive and then re-add your account into the permissions.  You will need to be a local administrator though.
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aadihCommented:
Try a system restore if you have a restore point for the volume.
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sjw601Author Commented:
There is no system restore, but I do have an disk image backup of the system.  Would moving the drive to a different system help?
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sjw601Author Commented:
I can't seem to take ownership, as I can't access the drive's properties.  Is there a way to take ownership through another approach?
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aadihCommented:
Having not directly experienced this problem, I can only say that no harm trying.
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sjw601Author Commented:
Well, this worker after all.  I can access everything in the volume.  However, each folder appears with a lock on its icon.  Can I get rid of the locks?
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David AtkinTechnical DirectorCommented:
The locks are there because you don't have permissions again.  

In security under advanced, click change permissions.., add yourself and give yourself full control.  Then tick the box for 'replace all child object permissions with inheritable permissions from this object'.

The permissions will be pushed down to all the sub folders

Do that on the drive btw.
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sjw601Author Commented:
Thanks. Scorpeo, but it doesn't work.  I already was in the users with full control.  There are two users: Administrators and "me."  I highlighted "me," clicked change permissions, ticked the box, and clicked Apply.  The locks still remain.
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David AtkinTechnical DirectorCommented:
Have a look here:
http://www.howtogeek.com/howto/17117/remove-the-lock-icon-from-a-folder-in-windows-7/

You may need to exit the folder and go back onto it again for the view to take affect.  I suggest you add the users group will full access as well.
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