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What i'm trying to do is install Windows 7 in purely UEFI mode on systems where the legacy option rom is not even available. If you do an install on systems where legacy rom option is enabled, then the installer works and it even creates a GPT disk with 3 partitions (like it should).
![Install windows 10 uefi mode Install windows 10 uefi mode](/uploads/1/2/5/5/125507836/985619997.jpg)
I just got an Acer Aspire A515-51G which came with a Linux distribution preinstalled. The first thing I did was install Windows 10 instead.
I used the Media Creation Tool to create an .iso file and then burned this file onto a DVD. When I tried booting the laptop from the DVD in UEFI mode by changing the boot order and disabling Secure Boot, the laptop would just boot the Linux OS anyways. Only after switching to legacy mode did the laptop boot from the Windows DVD.
Now that Windows 10 is installed, I wanted to switch the boot mode back to UEFI but when I did that, I got a 'no bootable device' error on start-up.
My understanding is that UEFI is better/safer than legacy mode, so ideally I would like my Windows 10 OS to boot in UEFI as well. How can I accomplish that? If the only way to do this is to install Windows 10 again in UEFI mode, how do I ensure that the laptop does indeed boot from the DVD and does not ignore my boot order settings?
Thanks for your help!
(I have a 256 GB SSD and no HDD in my laptop, if that is relevant.)
I used the Media Creation Tool to create an .iso file and then burned this file onto a DVD. When I tried booting the laptop from the DVD in UEFI mode by changing the boot order and disabling Secure Boot, the laptop would just boot the Linux OS anyways. Only after switching to legacy mode did the laptop boot from the Windows DVD.
Now that Windows 10 is installed, I wanted to switch the boot mode back to UEFI but when I did that, I got a 'no bootable device' error on start-up.
My understanding is that UEFI is better/safer than legacy mode, so ideally I would like my Windows 10 OS to boot in UEFI as well. How can I accomplish that? If the only way to do this is to install Windows 10 again in UEFI mode, how do I ensure that the laptop does indeed boot from the DVD and does not ignore my boot order settings?
Thanks for your help!
(I have a 256 GB SSD and no HDD in my laptop, if that is relevant.)
![Uefi Uefi](/uploads/1/2/5/5/125507836/594099705.png)
I assembled my computer two and a half years ago, purely by chance I stumbled upon a comment in which a user was talking about the installation of the operating system in UEFI mode, which I never heard of before.
I checked, following these instructions http://blogs.technet.com/b/home_is_where_i_lay_my_head/archive/2012/10/02/how-to-check-in-windows-if-you-are-using-uefi.aspx, if my OS was installed in UEFI mode, but obviously that was not the case. My motherboard is an Asrock Z68 Extreme 4 Gen3.
So my question is: does it make sense for me to make a clean install in UEFI mode, would I have any advantages?
Thank you.
I checked, following these instructions http://blogs.technet.com/b/home_is_where_i_lay_my_head/archive/2012/10/02/how-to-check-in-windows-if-you-are-using-uefi.aspx, if my OS was installed in UEFI mode, but obviously that was not the case. My motherboard is an Asrock Z68 Extreme 4 Gen3.
So my question is: does it make sense for me to make a clean install in UEFI mode, would I have any advantages?
Thank you.
![](/uploads/1/2/5/5/125507836/686896819.jpg)