For Windows I'd try formatting the USB Stick with ExFAT and then copying over the files from the ISO.

Something like this: https://itsfoss.com/bootable-windows-usb-linux/ which is the first guide I found, it's for Ubuntu but I don't think there's much if any difference in this case.

You used to have to flag the partition on the USB as bootable, but don't think I've needed to in recent years.

Thomas

On Sun, Jul 5, 2020 at 1:17 PM Robin Lee <robinlee@mailbox.org> wrote:
On Sun, 2020-07-05 at 12:51 -0700, Samuel Sieb wrote:
> On 7/5/20 12:48 PM, Robin Lee wrote:
> > On Sun, 2020-07-05 at 12:21 -0700, Samuel Sieb wrote:
> > > On 7/5/20 12:01 PM, Robin Lee wrote:
> > > > I've downloaded a Windows installer ISO-file from microsoft.com
> > > > that I
> > > > put on a USB-stick and tried to install Windows on physical
> > > > machine,
> > > > but it won't boot from the USB. It shows up in the BIOS boot
> > > > menu,
> > > > but
> > > > it won't boot.
> > > >
> > > > I've tried to install the same ISO-file in Boxes and that went
> > > > fine.
> > > > I've tried both Brasero and Disk Image Writer, I've tried two
> > > > different
> > > > USB-sticks and two different physical target machines.
> > >
> > > Boxes will make it a DVD drive, not USB.
> > >
> > > Isn't Brasero only for writing to optical media?  Anyway, I would
> > > just
> > > use dd to write it to the flash drive.
> > >
> > > In a terminal (change sdc to whatever your flash drive is):
> > > sudo dd if=windows.iso of=/dev/sdc bs=1M status=progress
> >
> > Same result.
> >
> > Also tested creating a bootable USB-stick with a Centos ISO-file.
> > No
> > problem.
>
> Maybe that file can't be booted from usb.  Are there any
> instructions
> from Microsoft about how to do it?  I know I have done it a couple
> of
> times in the past.

Installer iso-files that couldn't be put on a usb-stick doesn't seem to
make sense. The file is called Win10_2004_English_x64.iso
After the iso-file is on the stick Gnome Disks gives the contents as
UDF version 1.02 and it can be mounted.

I have to see if I can find any special instructions from
microsoft.com, although they would probably not cover how to do it on
Fedora
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