I'm involved in an extracurricular project in my electrical engineering undergrad course, which involves cloning an HDD without the help of any ready to use tools, so software solutions (e.g. Clonezilla) are out of the question.
We've found tutorials which use the Raspberry Pi, but our Professor said that it also isn't allowed, as no OS should be used in this task.
Seeing that equipment such as the Simplecom SD322 exist, it seems to be possible to somehow achieve this.
So my question: is it viable to build a DIY equipment to clone HDDs with undergrad electrical engineering knowledge? Has someone ever done this, or read an article/book about it?
If not, is it possible we just misinterpret what the Professor wanted us to do? He's kind of hardheaded so I'd like to avoid getting back to him empty-handed.