cjrgreen: See, the problem here is you're trying to drive a truck through the eye of a needle.
The exceptions hedwards mentions are
narrow. ALMOST ALL No-CD cracks are meant for one purpose only, and that is piracy.
Mere convenience is not a justification like the need to use a backup or make the software compatible with recalcitrant hardware. Using no-cd cracks for convenience encourages pirates.
And software is
not necessarily subject to first sale doctrine. The landmark case, Vernor v. Autodesk, was overturned in favor of Autodesk.
That's where it gets messy, technically speaking in a case like that Vernor ought to have sued Autodesk for fraud.
More than that though, the proceedings are still ongoing as far as I can tell. And ultimately, that particular opinion only applies to the 9th circuit, not to the rest of the country at present. Those courts often times do get it wrong because they're not supposed to be setting precedence. Which is why that one was so mind boggling.
As for the intention aspect, it doesn't matter, software of that sort is protected under the 1st amendment protections for speech. Backing up software would be a substantial non-infringing use as would the ability to run the software without having the disc in the drive.
At the end of the day, I doubt very much that the prosecutor's office would bother bringing a case like this up where there's no actual piracy going on. At most this would be a civil matter.
That being said, no company in its right mind would sue somebody for using a non-CD patch or violating the EULA in this sort of way, there's just way too much to lose if they lose the case.