New
#11
for the first comment: try to boot PC with that DVD. If it boots, it's OK :) (well, 99% - boot sectors are the trickiest, the rest is easy..
You got your answer for second question (I guess)
For third question, regarding media content on flash drive...*Depends on the device you're playing it on. Most modern TVs, players etc play almost any video content provided on flash drives. ISOs are used to emulate DVD behavior (menus, etc) but not every device can play it.*