https://www.awp1.com/st.html
Or, if they were very small, they would just use multiple smaller scale devices that could do 2-4 copies at a time, like this:
https://pbs.twimg.com/media/Dgr_J-NUEAAHZ0I?format=jpg&name=...
Some of the expensive ones of these could do magnetic signal copying, but most just did sector-by-sector.
At least, that's my understanding. Bit before my time.
https://www.awp1.com/st.html
Or, if they were very small, they would just use multiple smaller scale devices that could do 2-4 copies at a time, like this:
https://pbs.twimg.com/media/Dgr_J-NUEAAHZ0I?format=jpg&name=...
Some of the expensive ones of these could do magnetic signal copying, but most just did sector-by-sector.
At least, that's my understanding. Bit before my time.