- Official Post
If you follow instructions on the Raspberry Pi Foundation website to mount the CM3's eMMC device to Windows our USB-SD creator app can be used to write the "Slice (CM3)" image directly to the eMMC volume. I've no idea how eMMC mounting is done via Mac or Linux, but assuming there is a process the native USB-SD creator apps for Mac/Linux should work fine too. Then just boot the Slice and it will format/prep things as required - it's exactly the same installer routine as an RPi3 for those that have done it. From chat with Gordon some other funky things like booting Slice (CM3) directly from the internal HDD should be possible, as it's connected via USB so Slice (CM3) has the same "can boot from USB" capabilities as RPi3, but until I have some time to fiddle around and experiment there are no written instructions with pretty screenshots.