Comment 14 for bug 493129

Same here! Unetbootin became Uh-not-bootin!

1. I used Unetbootin to overwrite a bootable Mint18.2 stick with a Mint18.3 iso
   => not bootable anymore!
2. I set the "bootable" flag on the one and only partition on this stick
   => still not bootable
3. I formatted the stick and wrote the Mint18.3 iso again
   => not bootable
4. I set the "bootable" flag again
   => finally the sticks boots as expected

It seems necessary to format the stick before using Unetbootin AND to set the "bootable" flag afterwards!

I use Unetbootin 608-1 in a up-to-date Mint 18.2 (based on Ubuntu 16.04 LTS)
I boot the stick in a quite old HP Compaq 8710p (standard non-EFI BIOS)