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Windows 7: Clean install with Upgrade version..

23 Oct 2009   #11
gregrocker

 
Win7 News confirms Upgrade same as Full Retail

How to clean install from Windows 7 Upgrade media

Mike Halsey | Oct 22, 2009 | Windows 7 News & Tips blog

One of the biggest unanswered questions about Windows 7 is whether you can perform a clean install using the upgrade edition of the operating system.

With legacy versions of Windows you needed to Ďshowí it an install CD from your older version of Windows. The problem here is that Microsoft allowed OEM PC makers to customise these discs, sometimes to the point where they were not recognisable as upgrade media by the installer, even though you had a legitimate copy.

With Windows Vista they changed this but you had to perform a workaround to get a clean install. Firstly you had to install Vista upgrade without entering a product key, and then you had to install it again performing an upgrade on the version you had already installed. This was time-consuming and many people didnít like itÖ understandably.

With Windows 7 Microsoft have only released the upgrade versions for the first time today and have been keeping very tight-lipped on this subject. The good, nay, excellent news is that performing a clean install using upgrade media is now the same as performing a clean install.

Windows 7 will just install merrily on your hard disk with itís upgrade product code and activate. You donít need an XP or Vista disc, and you donít need to install it over itself. This is excellent news and, while I havenít yet tried this myself, reports are coming in from across the web that this is indeed the case.

Many people will now ask if itís necessary to buy the full version of Windows 7. Quite simply now the answer is that it isnít. This means an significant price cut for Windows 7 over previous versions, effective immediately
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23 Oct 2009   #12
Zidane24

Windows 7 Home Premium x64 - Mac OS X 10.6.4 x64
 
 

This resolves it one and for all

Bravo Microsoft for not only fixing the price (to be fair) but to realize and correct a somewhat silly system
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23 Oct 2009   #13
quietus29

Windows 7 Retail
 
 

This guy didn't do anything. You can install windows 7 onto a blank hard drive. But you have to do it twice (like windows vista).
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23 Oct 2009   #14
apollo911

Windows 7, Vista HP, XP Pro
 
 

Me too :-)
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23 Oct 2009   #15
James Wood

Windows 7 Professional 64bit
 
 

Quote   Quote: Originally Posted by djjaeger82 View Post
Hi everyone,
This is not necessarily the case. Clean install from upgrade disc only seems to work with a previous version of windows on the drive already (not necessarily activated). I did a lot of testing on this tonight when I tried to upgrade my primary workstation after resetting my RAID array (completely blank, no partitions, no data etc).

Please take a look here:
Doing a Clean Install with a Upgrade Windows 7 Version
I know this isn't the same situation, but;
I downloaded the three files, extracted them and burnt them to a disk, I was able to install Windows 7 by restarting my computer, then booting from the disk. (I only had to do this because I was going from 32bit to 64bit) Otherwise if you are staying on the same "bit" versions, you can just run the CD/DVD whilst you are logged on.
Just pointing out that you do not need a operating system on the computer, to do a clean install, so long as you've made or own the disk.
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23 Oct 2009   #16
djjaeger82

windows7 RC
 
 

Hi James,
But when you did this you didn't format your drive blank before you rebooted to run the setup from the DVD did you? There's a difference between formatting your machine DURING setup vs. having a blank non-partitioned drive prior to setup.

-Dan
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23 Oct 2009   #17
ojustaboo

win 7
 
 

Windows Pro 64 upgrade from Digital River.

made ISO as per other peoples instructions on here.

Booted from ISO.

DELETED existing C drive

re-added it as a new drive

FORMATTED it.

Continued with the install (which took a long time to complete the installation compared to the RC version)

It accepted my product key and activated 100% fine. So it looks like a clean install without prior op system does work.

while I didn't reformat before I ran the setup, I had reformatted completely before I ran the previously installed RC win7
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23 Oct 2009   #18
desertjedi

Windows XP Pro 32-bit
 
 

Quote:
With Windows 7 Microsoft have only released the upgrade versions for the first time today and have been keeping very tight-lipped on this subject. The good, nay, excellent news is that performing a clean install using upgrade media is now the same as performing a clean install.

Great news! Now that I cancelled all my $50 Win 7 Upgrades from Newegg. How can this be considering it would make buying the full retail version an idiotic idea?
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23 Oct 2009   #19
Nosmo

Win 7 32 bit , Win xp Sp3
 
 

Two things. Many of the so called upgrade keys sent out yesterday were in fact 'Full'.

Also it has been reported that the upgrade media will NOT install if the computer is virgin clean. The installer is smart enough to 'see' any sign of an old XP or Vista and if it can not find any reference of previous install, it will fail.
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23 Oct 2009   #20
richc46

Microsoft Community Contributor Award Recipient

Windows 10, Home Clean Install
 
 

Quote   Quote: Originally Posted by Nosmo View Post
Two things. Many of the so called upgrade keys sent out yesterday were in fact 'Full'.

Also it has been reported that the upgrade media will NOT install if the computer is virgin clean. The installer is smart enough to 'see' any sign of an old XP or Vista and if it can not find any reference of previous install, it will fail.
It is my understanding that with the Discs that were part of the preorder, you can install exactly as you would with the full retail version. You can clean install on a formatted disk
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