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windows cannot be installed on this disk. The selected disk is of the GPT partition style

>?">"windows cannot be installed on this disk. The selected disk is of the GPT partition style."?? , so how can i install a os without losing all my data ,i don't have a hard drive to backup my data

Hi,   

  

Thank you for posting in Microsoft Community, we appreciate your interest in Windows 10.  

  

I understand the inconvenience that you are facing on Windows 10, we will certainly help you with this issue.   

 

I would like to inform you will have to create a backup of all the data if you do not want to lose it.

I suggest you to create a backup on the external drive.

 

Hope this information is useful.

 

Thank you.

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actually i dont have a external hard drive thats the problem , im not facing this problem right now ,i faced it when i installed windows 10 ,its just for my future concern ,cant i b able to install an os without deleting the partitions. sry for my bad english         

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This error means your PC has a UEFI BIOS that uses GPT partition formatting, but the installation media has been booted in Legacy and not UEFI mode.  To correct this the media must be booted as a UEFI or EFI device, then delete all partitions to get it cleanest and begin install. 

This is all explained along with everything else needed to get and keep a perfect install in Clean Reinstall Windows 10.

There are also several backup options suggested including using the 15gb free cloud storage MS Onedrive provides when you sign into Windows 10 with a MS account.  So you can store your files to the cloud by dragging them into the OneDrive folder to upload to the cloud, confirm they are  all there, then after reinstall the files will be there in the OneDrive folder waiting.

Feel free to ask back any questions.

Windows MVP 2010-2020 (ret).
Millions helped via my tutorials and personally in forums for 14 years.
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Last updated August 5, 2024 Views 5,094 Applies to: