Upgrading from Windows 7 Beta to the Release Candidate

I've written in the past that Microsoft will support upgrading from the Beta version of Windows 7 to the upcoming release candidate (RC) version. And it's true. But as Microsoft reveals in a typically long-winded Engineering Windows 7 blog post, it's going to take a bit of work.

These instructions will be brief.

LOL. That sentence appears a whopping 1,058 words into the post, by the way.

Anyway...

Here’s what you can do to bypass the check for pre-release upgrade IF YOU REALLY REALLY NEED TO:

  1. Download the ISO as you did previously and burn the ISO to a DVD.
  2. Copy the whole image to a storage location you wish to run the upgrade from (a bootable flash drive or a directory on any partition on the machine running the pre-release build).
  3. Browse to the sources directory.
  4. Open the file cversion.ini in a text editor like Notepad.
  5. Modify the MinClient build number to a value lower than the down-level build. For example, change 7100 to 7000.
  6. Save the file in place with the same name.
  7. Run setup like you would normally from this modified copy of the image and the version check will be bypassed.

These same steps will be required as we transition from the RC milestone to the RTM milestone.

So let's be clear here: Upgrading build over build is never recommended. If you can do it, do a clean install of the RC instead.

Oh, and as for RC-to-RTM or Beta-to-RTM upgrades, I'd been told previously that this would not be supported. But the workaround above will apparently work. Seriously, do not do this.

Discuss this Article 52

chuckb84
on Apr 8, 2009
Master3, bettielblu is right, go back on the meds. On this, "No one is worried. We just have had it up to here with a small, obnoxious group of infantile users of their platform that have made it their mission to PO as many non-Apple using people as possible. And maybe now that you clowns are having some humble pie, maybe your maturity level will improve." Well, I guess Microsoft is worried enough to spend significant money directly addressing a competitor with a 3% marketshare! As many have pointed out, that is a serious mistake for the dominant player to make, so Apple has either goaded them into a stupid mistake or Microsoft is worried about the future. Despite a well-documented chair throwing temper, Ballmer is not stupid, and he has lots of good advisors. Therefore, I assume they have a reason to worry. If they've started this ad campaign from wounded pride and bruised egos, it is a serious mistake. I assume they have business reasons for it, and I assume that it is part of an effort to drive adoption of Windows 7, but I don't know, nor does anyone else here. I stand by the earlier comment, "Apple is somehow both a looming threat and a trivial irrelevance?" I think your vitriolic tone comes from the cognitive dissonance of knowing (or wondering) that Apple IS a threat while simultaneously refusing to acknowledge that. When Jobs came back to Apple he lectured the crowd at Macworld, more or less telling them to get over the notion that "For Apple to win, Microsoft has to lose." He was right, and it cuts both ways now. A new Microsoft OS that succeeds will press Apple to innovate. Apple's innovations have clearly changed Microsoft. These are good things.
shark47
on Apr 8, 2009
"When Jobs came back to Apple he lectured the crowd at Macworld, more or less telling them to get over the notion that "For Apple to win, Microsoft has to lose." He was right, and it cuts both ways now." He was actually wrong. It's not a zero sum game. It never was. This isn't a basketball game. Mac fanatics need to make up their minds. The moderates in the Mac community should step forward and stop letting the Rush Limbaughs speak for them. I'm sure there are a lot of level headed Mac users, but the recent Microsoft ads have brought the robertsjoes to the forefront. This "you're either with us or against us" mentality has gotten us into trouble before, hasn't it? T

Please or Register to post comments.

IT/Dev Connections

Las Vegas
September 30th - October 4th

Paul ThurottYou'll have the opportunity to experience:
• 120 Technical
Sessions
• Networking with Peers
• Expert Speakers


Come See Paul Thurrott & Mary Jo Foley in Person!

Register Now

Office 365 InfoCenter

Get the latest insight and info from Paul

Read Now!

What I Use