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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.

K7AAY
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eloskowyGaming
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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 '19 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](https://askubuntu.com/questions/1097560/woeusb-error-code-256-with-ntfs-formatted-usb/1098185#1098185). – sudodus Dec 27 '19 at 18:06

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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'

Ahmad Raza
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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 '19 at 10:45
  • How I can change partition type? – eloskowyGaming Dec 28 '19 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 '19 at 10:09