@deckingman said in Replace SD card with an ssd:
Edit. I note that SD to SATA adaptors are available. Would that work on a Duet main board?
While there are adaptors that allow an SD card to be connected to the SATA interface, I can't find any that work the other way, and it's mainly because SD cards use a simple storage protocol (and has small overhead that the Duet can cope with), while SATA and USB are much more complex protocols. Here's an old link from 2012 that explains why it's difficult:
https://raspberrypi.stackexchange.com/questions/1765/possible-to-connect-sata-device-to-the-sd-slot
Realistically, a USB interface (with a USB chip) for connecting drives (either USB memory sticks or SSD drives) would probably be the way to go for a standalone, though that doesn't help with existing Duets. However, the rise of connected SBCs like the Raspberry Pi has effectively leapfrogged this option, I think.
Ian