[Help] How to delete Windows 7


I just bought Windows 8 and a SSD for the OS. I want to remove Windows 7 from my existing HDD so it only stores data and doesn't work as a OS anymore. How can I do that?


After you are confident that you no longer need Win 7, move your data to a temporary drive and reformat the HDD.


Senior Member
Are you sure you'll stick with 8? Many that move to Win 8 don't like it and want to go back to Win 7. You may want to make a system image of that Win 7 drive which could be restored to the ssd should you decide you don't like Win 8.

You can't just delete an OS so as Fixer1234 said, you need to format that drive.

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Okay I understand. Do I need the Windows 7 installation DVD or can I do it all under the BIOS?


Extraordinary Member
What do you have right now. A double boot Windows 7/Windows 8 or a seperate 8 installation on the SSD. It would help if you could post a screenshot of your Disk Management. Then we'll see.

I don't have my Windows 7 installation DVD anymore, however I will get my Windows 8 installation DVD and SSD tomorrow. Can I use that DVD to wipe my current HDD?


Extraordinary Member
There are many ways to wipe the HDD. That is your smallest problem once you have 8 running on the SSD.

Very Important: When you install 8 on the SSD you must disconnect the HDD where 7 resides. If you don't, the 8 bootmgr will end up on the 7 disk and then you are stuck with 7. After you installed 8, you have to change the BIOS boot order to set the SSD before the HDD (which you can reattach after the 8 installation).

I don't have my Windows 7 installation DVD anymore, however I will get my Windows 8 installation DVD and SSD tomorrow. Can I use that DVD to wipe my current HDD?
Once Win 8 is installed and tested and you are ready to reformat the old HDD, you will do it using Win 8. The easiest way is to use Windows Explorer (My Computer). Right-click on the HDD and there will be an option to format. (I don't use Win 8 but I assume Explorer is still there and formatting is still a context menu item. If Microsoft crapped that up, too, somebody can correct me on this.)


Senior Member
Don't touch the Windows 7 installation. Just create a separate partition for your data. If it's a 1TB drive, just create another, say, 750GB partition for all your data to be used with Windows 8. It will be your secondary drive but you can still boot up to it by choosing boot drive from start-up later on. After creating the partition, take it out first and replace with the SSD to install the Win 8.



Essential Member
Microsoft Community Contributor

If I get where you are at you haven't installed Windows 8 yet?

If not either put in the SSD and install Windows 8 on it, it should automaticly set up a dual boot setup.

Or put the SSD in your computer, and unplug your hard drive, make sure that your computer recognises the SSD, then install Windows 8 on the SSD.

Once you can boot into Windows 8 you can plug your hard drive back in.

Either way do not delete your Windows 7 installation until you are sure it is not on the boot menu.
If it is and you remove it, your computer probably won't boot.

If it does show up an easy way to remove it, is to use EasyBCD.


Pick the free non commercial version.

If you need to, remove Windows 7 from the boot list, set Windows 8 as the default, and reboot your computer to be sure it boots into Windows 8 directly, then it's safe to format the drive that Windows 7 is on.

If there is other data on the drive create a new partition on the drive in Disk Manager, move all the data to that partition before you format the Windows partiton.

You should be able to do that from Windows 8.

As others have said, you may want to wait a while to make sure that everything in Windows 8 works and that you really prefer it to Windows 7 before you make the final decision.

If you want to try dual booting, you should be able to enable it using EasyBCD, as long as the Windows partition on your hard drive is intact.



Extraordinary Member
For the OP's purposes I would not want a double boot situation. It is too messy to get the bootmgr of 8.1 out of the 7 partitions and to cleanup the bootmgr and the MBR. It can be done, but you really have to know EasyBCD very well.

Unplugging the 7 disk during the 8.1 installation on the SSD is a much easier and cleaner approach.


Extraordinary Member
Premium Supporter
The only sure way to get rid of something is to get rid of it, meaning you have to get rid of the data = happens through the ancient old way of zero format or unpart your disk > repart it... But, that is a disastrous move, not to be reversed as it destroys all data; Thus, I would recommend that you follow the suggestions given, NOT to do anything drastic, unless certain.

Having two or more OS is not really a problem, generally. If your major OS works fine, what's the ball game?

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