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I installed Ubuntu a month ago, then decided to reinstall Windows 10. I tried copying files from ISO to a FAT32 formatted USB flash drive, making this with woeusb and unetbootin, adding flags. After making the Windows bootable USB with unetbootin, the USB flash drive starts, but the bootloader don't see windows files/gives only default option.

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  • Need to use 'woeusb' to make a bootable windows USB from ubuntu. Think unetbootin does not work for making bootable windows USB in ubuntu.
    – crip659
    Dec 27, 2019 at 16:03
  • You can use woeusb in text mode (command line) to create a USB pendrive that works both in BIOS mode and UEFI mode. See this link.
    – sudodus
    Dec 27, 2019 at 18:06

1 Answer 1

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If your pc is UEFI, you should:

  1. Create NTFS filesystem on USB's first (and single) partition,

  2. Set the partition type to 'Microsoft Basic Data`

  3. Copy all files from ISO to USB

  4. Reboot, enter boot menu and select USB's first partition to boot into

People usually make mistake of creating FAT32 filesystem, but in most cases it does not work since windows ISO include a bigger file than the size supported by FAT32

If your pc is not UEFI, you should use WoeUSB tool to create bootable `Windows Pendrive'

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  • Now, I need to install ubuntu, because system files is crashed xD Anyway, I will try this solution.
    – eloskowyGaming
    Dec 28, 2019 at 10:45
  • How I can change partition type?
    – eloskowyGaming
    Dec 28, 2019 at 19:28
  • @eloskowyGaming You can use cfdisk tool as well as gparted for this purpose. With cfdisk use cfdisk /dev/sdaX to open with usb. Select partition and use arrow keys to use Type option and change that. After that you should Write with write option.
    – Ahmad Raza
    Dec 31, 2019 at 10:09

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