Windows 10 How to delete an unintentionally dual booted OS in windows 10?

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Luke13TH

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Oct 1, 2015

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64

• Nov 25, 2015

• #2

Hi,

Heres some steps you could try:

1. msconfig in search bar.
2. Go to boot tab, choose default booting OS.
3. Delete the old OS using disk management.
4. Copy OS to ssd.

Hope this helps.

 

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Luke13TH

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Oct 1, 2015

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• Nov 25, 2015

• #3

You can also delete the old OS using msconfig, just be careful

 

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pmang6

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Nov 25, 2015

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• Nov 25, 2015

• Thread Author
• #4

Luke13TH said:

You can also delete the old OS using msconfig, just be careful

Click to expand...

So how would I go about deleting the old OS with diskmgmt?

Also, what do I need to be careful about if i delete the old OS with msconfig?

 

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Luke13TH

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• Nov 26, 2015

• #5

i would use msconfig, as you can see in the boot tab you can choose whether to delete an OS or not. This would be the way i would do it.

 

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Saltgrass

Excellent Member

Microsoft Community Contributor

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Oct 16, 2009

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15,156

• Nov 26, 2015

• #6

You need to be careful, the boot files are currently on the HDD. Since the SSD shows as an Active partition, you may have some there also, but removing the HDD would let you know. Setting the SSD as the primary boot device may also help. If it stops booting, reattach the HDD and set it as primary boot device.

But to be clear, according to your attachment, you are using the HDD to boot and the SSD for your OS.

 

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MikeHawthorne

Essential Member

Microsoft Community Contributor

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May 25, 2009

Messages

6,659

• Nov 29, 2015

• #7

Hi

You can also use EasyBCD to make sure that the computer boots directly into Windows 10 without looking for Windows 7.

The free versions at the bottom of the page...

EasyBCD

If you delete Windows 7 while it's still in the boot list your computer won't boot, (I found this out the hard way years ago). LOL

Use EasyBCD to set Windows 10 as the default OS, remove Windows 7 from the boot list, and tell it not to show the boot menu,

Once you reboot and get it to boot directly to Windows 10, it's then safe to remove the Windows 7 installation.

Don't format the hard drive or remove the boot sector, if the boot files are on that drive that would screw things up as well.

Just delete the Windows install and related files, i.e the Windows 7, Program Files and Program Files (x86) folders if you are not running any of the software installed in them.

Mike

 

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