UEFI doesn't boot after Windows 10 clean install

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RaulCastro

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Aug 2, 2015
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After installing Windows 10 I can only boot using Legacy
When trying UEFI I get this message:
"Boot Device Not Found
Please installl an operating system on your hard disk
Hard Disk (3F0)"
I know little about this but I think it's because I had to
delete all the partitions when clean installing...

Legacy takes way longer to boot
Is there a way of making UEFI work again?
 
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mikeynavy1976

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Feb 14, 2007
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Your bootable USB may have been made in Legacy mode. I had a similar issue when I needed to make a UEFI bootable USB with Windows 8.1 several months ago. I think there's a program called Rufus (I'm sure there are others) that will help you make a bootable USB. Make sure you select the option(s) for UEFI...and not Legacy.
 
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RaulCastro

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Aug 2, 2015
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4,510


I did but I've read somewhere that you have to select FAT32 (I did NTFS) for it to work in UEFI mode, so that's maybe why...

Is there a difference between UEFI and Legacy other than the boot time? I'm feeling Windows kinda sluggish, could it be because of it or that's impossible?
 
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