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changing boot order from uefi to legacy

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Example: Pavilion 510

I am working from home and we are using a usb for my desktop. They advised me that I will need to change my boot order from UEFI to legacy. I am confused as to how to change this in bios. I have legacy enabled and my usb drive is the first thing to boot under Legacy. I have tried looking up instructions and youtube videos but they are so outdated. I just want to turn on my computer it boots to my usb desktop and when i am not using the usb, it boots to my windows desktop. Any suggestions???

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Sorry, but I don't understand your issue.


You said you already changed your boot MODE to Legacy and you see the USB as a device under the Boot Devices menu.


So, does the USB not boot when you select it?

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