2. If you use GHOST, just check whether your file path is correct.
3. It is also possible that the image is damaged, which makes it invalid.
If you are not familiar with the system, it is recommended not to use GHOST, but to install it by CD-ROM fool. Because there are many options when GHOST chooses, some are recovery, some are backup, and some are compression. If you are not familiar with it, it is easy to make mistakes.