For developers and machine rebuilders, the factory image is often bloated. You can extract and rebuild the image using Linux.
# On Ubuntu/Debian
sudo apt-get install kpartx util-linux
# Mount the original image
sudo kpartx -av g156.img
# You'll see loop0p1 (boot) and loop0p2 (rootfs)
# Mount the rootfs
sudo mount /dev/mapper/loop0p2 /mnt/g156_root
# Modify the CNC interpreter (e.g., update macro cycles in /usr/bin/cnc)
# Repack using dd
sudo dd if=/dev/loop0 of=new_g156.img bs=1M status=progress
Warning: Modifying the kernel drivers will void your warranty and may damage stepper drivers if timing changes. cncautog156img install
✅ Touchscreen calibration – If the display doesn’t respond correctly, look for a calibrate.sh script on the desktop or in /home/user/. For developers and machine rebuilders, the factory image
✅ Check ESTOP and limits – The image includes default pinouts, but your wiring may differ. Run the “Parport Test” or “Pin Tester” utility. Warning: Modifying the kernel drivers will void your
✅ Update machine parameters – Go to Config → Machine Parameters and verify:
cncautog156img appears to be a device/driver package or software component often referenced in contexts involving CNC-related controllers or imaging/drivers named similarly (exact origin unclear). Searches show it’s commonly mentioned as an installer file or driver package for a specific device model; however, authoritative vendor documentation is not widely available.
dd (Linux):
sudo dd if=cncautog156img of=/dev/sdX bs=4M status=progress sync