From: John Cuccia 

On Wed, 14 Jan 2004 20:29:26 -0500, "Geo."  wrote:

>Permissions are stored in the file system not in the registry so to restore
>the permissions you would need to restore from tape backup or something
>along those lines.

Share definitions, including share level permissions, are stored in the registry:

HKLM\System\CurrentControlSet\Services\lanmanserver\Shares/Security

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