Warranties for software are notoriously narrowly scoped. Not warranted for any particular use or fitness for any purpose, etc. About all they will warrant is th

Warranties for software are notoriously narrowly scoped. Not warranted for any particular use or fitness for any purpose, etc. About all they will warrant is that the media itself works and offer to replace it if it doesn't. So just warrant that what you are selling is what it claims to be and offer a refund or replacement if it isn't. That seems to be materially the same as what the original seller provides.