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Date:	Fri, 10 Apr 2015 02:14:59 -0500
Message-ID:	<CAAXzdLVw7sukba5HjxKyNnDX2bR2btPES_ae+DhLaCCUKG7SMw@mail.gmail.com>
Subject:	Re: setfacl can kill a drive
From:	Steven Penny <svnpenn AT gmail DOT com>
To:	cygwin AT cygwin DOT com
X-IsSubscribed:	yes

On Thu, Apr 9, 2015 at 10:38 PM, Steven Penny wrote:
>     $ icacls 'C:\.' /restore 'C:\acl.txt'
>     C:\.\.: Access is denied.

I believe the following commands will fix it. After setfacl trashes the
permissions, you need to temporarily take ownership of "C:\", restore the
permissions then set the owner back. Of course this is contingent on either
having backed up the permissions beforehand, or perhaps transferring them from
a clean virtual machine.

    icacls 'C:\.' /save 'C:\acl.txt'
    setfacl --remove-all /cygdrive/c
    takeown /f 'C:\.'
    icacls 'C:\.' /grant users:f
    icacls 'C:\acl.txt' /grant users:f
    icacls 'C:\.' /restore 'C:\acl.txt'
    icacls 'C:\.' /setowner 'NT SERVICE\TrustedInstaller'

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