The instruction on that page is for existing Ubuntu users. You can't do the same from Windows.
If you want to try Ubuntu for the first time, (No Ubuntu installed) you need to use a Windows tool to make your USB disk bootable with Ubuntu. See this section of the help page. It is for Windows users. If you are a MAC user, you should visit this page
1) What format do I choose for the USB stick?
Assuming you are referring the filesystem type, I suggest using Fat or Fat32 filesystem. The Windows tool automatically uses this format.
2) What is Dash? (Will I know when I run the installer?)
Dash is a modern and visually appealing replacement of traditional menu system. It is included in Unity. You can see this in action, if you "Try Ubuntu" before installation using the Live CD/USB.
3) Can I do this from a Mac or Windows computer? Or only from Ubuntu?
Assuming you are referring to make a bootable USB, You can do this from Mac or Windows. You don't need to have Ubuntu for trying Ubuntu. This doesn't make good sense.
Hope this answer will help.
See this links:
Writing ISOs with WoeUSB (WinUSB fork)
Some answers are outdated, since WinUSB is not working anymore. But there is a working fork called WoeUSB.
Github: https://github.com/WoeUSB/WoeUSB
TLDR:
sudo woeusb --target-filesystem NTFS --device /path/to/your.iso /dev/sdX
Installation
It does not uninstall grub-efi anymore!
☞ Ubuntu / Debian
sudo add-apt-repository universe # contains the p7zip-full dependency
sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt update
sudo apt install woeusb
☞ Arch
pacaur -S woeusb-git
☞ Fedora
dnf install -y WoeUSB
☞ OpenSUSE
zypper install WoeUSB
Identifying the USB stick (the /dev/sdX path)
GUI approach
Search for a programm called disks, or if you use gnome you can launch it by executing gnome-disks
.
Command line approach
There are several commands available to list storage devices. You might try one of these:
sudo lsblk --scsi --paths
sudo lshw -class disk -short
Identify your usb device and see which path it has (like /dev/sdX).
Writing the ISO
After installation, write the windows ISO to your storage device with the following command. In the command below replace the X in /dev/sdX with your usb device path (see above how to find it).
sudo woeusb --target-filesystem NTFS --device /path/to/your.iso /dev/sdX
The --target-filesystem NTFS
flag is required if the installation image is greater than 4GB, which is the case for the current Windows 10 official ISO file.
Best Answer
Try dd command.
The dd command copies a file, converting the format of the data in the process, according to the operands specified.
Operands:
if=FILE -- Read from file instead of stdin.
of=FILE -- Write to file instead of stdout
bs=BYTES -- Read and write bytes at a time.
count=BLOCKS -- Copy only input blocks.
sync -- Use synchronized I/O for metadata.
Example:
Open a terminal.
Run it:
Note: Always clearly identify the usb-stick with fdisk -l command, improperly entering the wrong values could inadvertently overwrite the data on the hard drive.