How to create bootable USB thumb drive with iso file

[Bret Busby]

Hello.

In trying to find how to create a bootable USB thumb drive with an iso
file, I found the web page at
https://ubuntu.com/tutorials/tutorial-create-a-usb-stick-on-ubuntu#3-launch-startup-disk-creator

which has

"
3. Launch Startup Disk Creator

We’re going to use an application called ‘Startup Disk Creator’ to
write the ISO image to your USB stick. This is installed by default on
Ubuntu, and can be launched as follows:

Insert your USB stick (select ‘Do nothing’ if prompted by Ubuntu)
On Ubuntu 18.04 and later, use the bottom left icon to open ‘Show Applications’
In older versions of Ubuntu, use the top left icon to open the dash
Use the search field to look for Startup Disk Creator
Select Startup Disk Creator from the results to launch the application
"

But, on the system (UbuntuMATE 19.10) to which I downloaded three iso
files; for each of UbuntuMATE, Lubuntu, and Xubuntu, each of version
20.04, in the sub-menu's to the Applications menu, no entry for
Startup Disk Creator, is visible, and, the Applications menu and each
sub-menu, do not have a search facility.

Is the application still available?

In searching for the application in synaptic, the application was not
found, but, v0.3.7 of usb-creator was the only result returned.

-- 
Bret Busby
Armadale
West Australia
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