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For some reason, my PC won't boot from usb stick. I've already done it in the past, but it's not working now. I should say that I'm no expert in the subject.

I have Ubuntu 20.04 as the only OS in the PC. now I have to install Windows 10. I created a bootable Windows 10 USB stick and I've already set the booting order in the BIOS, but it simply won't work.

I have used differente programs to create the bootable device (bootable disc creator and UNetBootin), I have tryed different USB ports, I have used different USB sticks, I've formatted them to both FAT32 and NTFS systems, I have changed the BIOS mode to both Legacy and UEFI. Nothing works. The problem isn't the .iso file either, 'cause I've tried it in a VM and it works just fine.

When I create the bootable USB stick with Bootable Disc Creator: in the Legacy mode it just starts Ubuntu normally, as if there was no flash drive inserted. And in the UEFI mode, it just shows me a message saying "no bootable device found". When I create it with UNetBootin, a UnetBootin message appears with a command line available. But nothing seems to work and I just end up restarting the pc again and again.

Can anyone help me out here, 'cause at this point I'm extremely frustrated...

Edit: Now I'm getting this message when I try to boot from the USB drive:

"SYSLINUX 6.04 EDD 20191223 Copyright (C) 1994-2015 H. Peter Anvin et al".

This message only shows up when I create the bootable device with UNetBootin.

I'm using a Windows 10 ISO.

This is the output of the command you suggested (sudo parted -l):

enter image description here

I just realized it's in Portuguese... Modelo = Model. Disco = Disc. Tamanho do setor = Sector Size. Tabela de partição = Partition table. Opções = options. Número = Number. Início = beggining. Fim = End. Tamanho = Size. Tipo = Type. Sistema de arquivos = File System.

Zanna
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Dj Quaresma
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  • What ISO did you use to create the bootable USB stick? When you boot into Ubuntu are you in UEFI or Legacy mode? With the USB stick inserted run sudo parted -l and post output into question. – Paul Benson Sep 23 '20 at 21:03
  • So you are trying to create a Windows 10 bootable USB? – SimpliFixed Sep 23 '20 at 21:07
  • @Dj Quaresma I can follow Portuguese. So sdb is your USB drive, about 4GB? I don't think that's a big enough size. My Win10 USB drive uses 4.3 GB. Please confirm. – Paul Benson Sep 24 '20 at 01:22
  • Working from Ubuntu I have had best luck using mkusb-plug or Ventoy for making the Windows Installer USB, See: https://askubuntu.com/questions/1274878/make-windows-10-bootable-usb-in-ubuntu/1274975#1274975 and https://askubuntu.com/questions/1272040/multi-purpose-installer/1272618#1272618 UNetbootin and Startup Disk Creator have not worked for me making a Windows install disk. – C.S.Cameron Sep 24 '20 at 03:47

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