For more information about image files and boot disks

For more information about image files and boot disks, see-Linux general technology-Linux technology and application. 1. If you burn a Fedora image file from the Internet to a CD, can this CD be used to start the disk,
2. When the ora boot disk is made into an image file, the file is obtained directly from the disc and then made into an iso file using software such as alcohol, can such an image file be used for hard disk installation? when creating an image file, there is no requirement for the order of disk tracks. It seems that the boot disk must be a copy disc, copy the track of the original boot disk to another disk.
Thank you for your explanation.