The Internet Archive acts as a library. If a copyright holder sends a DMCA notice, they remove the file. However, they also host "The Library of Congress" collections, which are legal. You are responsible for your own downloads.
Once you’ve downloaded a massive ISO file, you have three main ways to use it:
It is important to note that Archive.org operates under a library philosophy. While they host a vast amount of material, the copyright status of DVD ISOs can be complex. Much of the content falls under "Abandonware" or is uploaded for preservation purposes under Section 108 of the U.S. Copyright Act. Users should always be aware of their local laws regarding the download of copyrighted material. A Community Effort