Backup C:/ can create an image?

I have seen people creating an iso straight from boot-up. I have Ghost 15, and I want to know if backuping C: is the same as creating an image like straight from boot-up  (blue screen)

 

Thanks.

 

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Edit... I just created a custom image disk after downloaidng the recovery tool. I suppose that's the boot-up recoveyr environment right?