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I currently have win10 laptop, so i created bootable usb with MediaCreationTool, FAT32.

And when Im trying to boot it from totally clear pc, UEFI doesn't recognize flash. In case if I clear CMOS, it sees this flash as USB 3.0 or UEFI 3.0, Partition 1.

Both doesn't work, because when i go force boot from the usb stick, it looses it after reboot and asks to select proper boot device. To make UEFI see usb-stick again, I have to clear CMOS one more time.

Also, if I pass these steps, windows installer asks for missing media drivers.

Secure and Fast boot disabled, CSM enabled and legacy setting only.

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  • Why are you enabling CSM, if you want to boot, to a EFI bootable device? Use Rufus to make the drive instead.
    – Ramhound
    Sep 10, 2016 at 17:38

1 Answer 1

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Try to use a plain USB2.0 flash drive. Many older (and current) UEFI/BIOSes get confused with USB3.0 drives.

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    This problem has nothing to do with USB 3.0. Windows 10 fully supports being installed by USB 3.0, and the fact his computer has a USB 3.0 port, means he can boot to one. HIs problem is he enabled CSM, which is not compatible with UEFI mode, for many reasons which are clear.
    – Ramhound
    Sep 10, 2016 at 17:39
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    It could be. But read more carefully next time before downvoting. OP says: "UEFI does not recognize flash". UEFI, not WIndows. I didn't say what is supported in Windows or what not. Windows can support anything, but UEFI can be limited.
    – Ale..chenski
    Sep 10, 2016 at 19:26
  • The described problem isn't because of USB 3.0, voting is anonymous for a reason, so people don't have to be attacked for issuing a vote. Please reconsider your stance on calling people out.
    – Ramhound
    Sep 10, 2016 at 20:03

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