It is claimed to be possible, but the rules are tighter than withPeter said:With Windows XP and earlier, it was possible to use the original
installation disks to repair corrupted and/or missing Windows files.
There was a repair "R" option.
Is this still the case with Windows7, or do the downloads and SP1's
etc prevent this? If not, what's the alternative?
For example, if I take a Windows 7 installer CD, and slipstream SP1
into it, that cannot be used for repair installing the OS to SP1 level.
You need an actual Windows 7 SP1 installer DVD (some of which are available
on the Internet for downloading, but it's unlikely to be the flavor you
So apparently, the usual tools for slipstreaming would not be adequate.
Whether someone outside Microsoft is working to fix this, I don't know.
Ref. (in the yellow box of text)
With the number of exception cases Microsoft likes to throw in, the odds
of Repair Install working after an emergency, is getting slim indeed.
About all you can rely on, is backups. That ought to work.