I've long known that you cannot simply put a disk image on a CD or USB flash drive and expect it to boot, but what characteristics make an image bootable?
I ask this because one of my computers crashed and I was trying to make a bootable version of DBAN on my Ubuntu computer. None of the Linux GUI programs used for writing an image to a USB flash drive have worked for me, and I tried to use the
dd command to do this.
It wrote to the flash drive successfully, and even retitled the USB flash drive in the filemanager
DBAN and put the files in such a way that it seemed to do it the right way. However, it wasn't bootable from any computer. But I tried using Brasero to write the image to the disk and it worked as it always does.