Mac software for MPCNC lowrider LR3 cnc machine

I would format the card - if you need to save the contents you can just drag them to your desktop like you can with any other hard drive or USB stick. You will need a card reader connected to your Mac of course, if you don’t have one just a cheapie will do the trick. Follow these instructions. (It’s easy) to format the card and erase everything that’s on it.

What size (capacity) is the card?

Thanks again guys.

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Not sure what capacity it is. Have to get a reader and then maybe the info will show. There’s nothing on the card that tells.

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The info will show when you mount it on your Mac. You will need the reader to transfer your gcode files to the disk, so I guess that’s the next step, or one of them at least.