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If someone wants to do an experiment, here is the information</span></font>
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I have about the way to change the list of files covered</span></font>
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by System Restore on Windows XP and Vista.</span></font>
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On XP, there is "super-hidden" file named </span></font>
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\windows\system32\restore\filelist.xml that specifies </span></font>
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the file types and directories covered by System Restore.</span></font>
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This file has the System, Hidden and Readonly attributes</span></font>
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set. Log on as an Administrator and in a Command Prompt</span></font>
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window type:</span></font>
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cd \windows\system32\restore</span></font>
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attrib -s -h -r filelist.xml</span></font>
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notepad filelist.xml</span></font>
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This file has elements named <FILES> and <DIRECTORIES></span></font>
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and <EXTENSIONS>, with <Include> and <Exclude> elements within </span></font>
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each. Not too hard to decypher. I don't know what extension </span></font>
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you're using for your VAX disk images, but I see that DSK </span></font>
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is listed in the <EXTENSIONS><Include> section.</span></font>
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So -- if someone wants to experiment with this on XP,</span></font>
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how about excluding the directory that contains</span></font>
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your VAX disk images by adding a new <REC> entry</span></font>
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inside <DIRECTORIES><Include>, in the form </span></font>
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<REC>c:\path\to\vax\files</REC>. Also, be sure that</span></font>
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System Protect is ON on the drive that holds</span></font>
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your VAX disk images.</span></font>
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Restart XP, log on as an Administrator, and request that </span></font>
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it take a System Restore point by following these steps:</span></font>
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1. Click Start, All Programs, Accessories, System Tools,</span></font>
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System Restore.</span></font>
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2. Select Create a Restore Point and click Next</span></font>
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3. Enter a description e.g. "Test after excluding VAX directory"</span></font>
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4. Click Create</span></font>
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Wait until disk activity ceases, then try running the</span></font>
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VAX simulator. Does the disk activity problem occur?</span></font>
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On Vista, System Restore, and on Business/Enterprise/Ultimate,</span></font>
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the Complate PC Backup and "Previous Files" features, are handled </span></font>
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by the Volume Shadow Copy service, so entire files are not</span></font>
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copied all at once as on XP. Original versions of changed blocks </span></font>
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are archived one at a time. </span></font>
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Tecnnically, you can't guarantee exclusion from coverage</span></font>
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by System Restore on Vista, since the backup occurs at the</span></font>
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block level, below the file system. But you can "advise" it to</span></font>
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try to avoid specified files. It's done in the registry under</span></font>
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HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\BackupRestore\FilesNotToSnapshot</span></font>
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There is probably no no compelling reason to try to exclude the </span></font>
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VAX disk images from coverage under Vista. Only changed blocks are </span></font>
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copied so it won't consume much time or space. I suppose if</span></font>
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you ever restore the disks from virtual tape, you'd be doing</span></font>
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double the work there. </span></font>
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I'd be interested in knowing if this does turn out to</span></font>
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be the answer to the VAX disk activity issue.</span></font>
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Regards</span></font>
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Brian</span></font>
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Brian</span></font>
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