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I was following These instructions and i ran into a problem.

I made the partition (screenshot) but when i ran windows 7 installer and tried to install in that partition it said the Disk0 partition 3 ( the one i made with free space for windows installation ) "WIndows cannot be installed to the selected disk. the selected disk is of the gpt partition style" and all the solutions i found were to Clean the disk, and since I don't want to lose my ubuntu i don't want to do that.

Please help

Thanks in advance.

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Nuno Travado
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  • you should read that: https://blogs.technet.microsoft.com/askcore/2011/05/31/installing-windows-7-on-uefi-based-computer/ – mook765 Oct 29 '16 at 17:24

2 Answers2

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Assuming you don't have a 64 bit Windows installation media or an UEFI-based system, I would recommend going through the entire content of this site including the comments. It claims successful conversion from GPT to MBR without data loss but I haven't checked it myself, so I would proceed with caution. Use this as a last resort.

But if you have a 64-bit installation media and an UEFI-based system, you should be able to change bios settings to successfully boot from GPT too. This post has lots of information on how to install windows 7 64 bit in an UEFI-based system. Good luck.

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rsnaveen
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  • IMHO, your first paragraph is a bad solution. Converting the existing OS from EFI-mode to BIOS-mode booting is overkill and can easily create new problems. The screen shot shows an ESP, which strongly suggests an EFI-based computer. – Rod Smith Oct 30 '16 at 02:59
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Your Ubuntu installation appears to be in EFI/UEFI mode, but the Windows message indicates that the Windows installer was booted in BIOS/CSM/legacy mode. It's best to coordinate the boot modes of all your OSes when you install more than one. In your case, this means booting the Windows installer in EFI/UEFI mode. This is basically a Windows question, not an Ubuntu question, but you might start with this page or this one. Googling or asking on a Windows forum may be helpful, too.

Rod Smith
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