Creating a bootable USB disk from ISO-file

 * Nemo version 4.2.3
 * Is issue with desktop or windowed nemo?  windowed nemo
 * Distribution - Mint 19.2
 * Graphics hardware *and* driver used  - not relevant
 * 64 bit 

Issue
I've downloaded redobackup-livecd-1.0.4.iso , write the image to USB stick but it doesn't boot.
Using Rufus on Windows 10 to create a bootable image with the same iso and the same USB-sticket works fine and boots Redo Backup

Steps to reproduce
-Within Nemo, right-click on the iso file and click something like (I have on the german version) "create bootable USB-stick".

• select the USB-stick (16GB) and click "write" (or so)
• File get's written to USB-stick and shows something like "succussful..."
• verify that files are actually on the USB-sticked

Expected behaviour
after reboot of PC, Redo back should boot from the USB stick.

Other information
existing data was overwritten. I didn't format the stick specifically.

Start by reproducing the Nemo context-menu workflow with redobackup-livecd-1.0.4.iso and a USB stick, then compare the resulting device with one created by Rufus. Investigate why the reported successful write does not produce a bootable device; done means the USB boots Redo Backup after reboot.