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Windows 7: if I already install window 7 using upgrade disc

14 Dec 2009   #1

Microsoft Window 7 Home Premium
if I already install window 7 using upgrade disc

can I use that same disc to reinstall it as my "genuine" window 7? since the previous install already deleted my window vista..

The situation now is my current OS is window 7(upgraded from vista),can I reinstall it using the same method?(upgrade disc) without worrying the copyright and such?

I want to do so because I heard peoples said that if you have a partition with OS alone will grant better performance to the I tryin' to immediately after the installment of the new window 7, I want to do a partition for the OS alone only,separate it with the programs file and such to avoid the OS file mix around with other file..

please give me some advice..

Thank you very much

My System SpecsSystem Spec
14 Dec 2009   #2

Windows 7 Pro X64 SP1

If you have a retail upgrade DVD, I believ that you can boot from it, format the OS partition, and install Win7. The old installation will qualify the upgrade license.

If something goes wrong with that, you won't be in trouble:

Clean install with Windows 7 upgrade media? Get the facts! | Ed Bott’s Microsoft Report |
My System SpecsSystem Spec
14 Dec 2009   #3
Microsoft MVP


You can also now go to Disk Management, right click on the one big Windows 7 paritition and ask it to Shrink Volume.

The Wizard will query the HD to see how much it can shrink your Win 7 partition.

If you accept to shrink it by that much, or by whatever other amount you tell it, then you will have Windows 7 on a separate partition.

It will leave unallocated space to the right of Win7 partition. Right click on that space and select to Create New partition in that space. I suggest you format it Logical which is standard for data partitions.

You can now transfer your data into the new partition from Windows 7 using explorer.
My System SpecsSystem Spec

14 Dec 2009   #4

Windows 7 x64 finally!

As Bob indicated, since you have a valid Vista license you qualify to use an upgrade license, and you can install or reinstall with that.
In order to transfer your user files, I suggest you check this tutorial. It will transfer the files and set your User folders to be in the new drive, so everything you save in the user files (such as My Documents) will go there.
My System SpecsSystem Spec

 if I already install window 7 using upgrade disc

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