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From:	"Lemke, Michael ST/HZA-ZIC2" <lemkemch AT schaeffler DOT com>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	RE: [cygwin] Re: Is a disk image created within dd "safe"?
Date:	Thu, 3 Sep 2015 11:16:40 +0000
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On Thursday, September 03, 2015 12:23 AM Jason Pyeron wrote:
>
>> -----Original Message-----
>> From: Eric Blake
>> Sent: Wednesday, September 02, 2015 6:06 PM
>> 
>> On 09/02/2015 03:57 PM, Clint Olsen wrote:
>> 
>> > I'm also interested in generating images to preserve the 
>> entire disk.
>> > What I'm wondering is whether doing this on a live system through 
>> > Cygwin would produce a safe, bootable disk image or if the the APIs 
>> > that Cygwin has to use or having the disk mounted would make this 
>> > unreliable?
><snip> don't do it with out snapshots... </snip>
>> There are various solutions that CAN capture an accurate 
>> point-in-time disk snapshot.  
>
>For cygwin/Windows use the Volume Shadow Service (VSS). I have used (XP)
>cygwin dd and rsync to take (clone) images from the VSS managed drive.
>

Could you elaborate a little? How does this VSS thing work? I am always
confused with Windows disk management when it isn't a single disk. Once
I can use dd and rsync I am fine.

Thanks,
Michael

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