Had a bit of time to go through the forum and noticed we did not give any usable info here, shame on us!

Use clonezilla, it is free and works perfectly for saving full images of anything from HDD/SSD/NVME.
So:
-install Linux Mint, any flavour
-use KIAUH to install Klipper and MainSail and everything you need
-set your printer properly and make sure everything is working
-use CloneZilla to save an image of that drive
-
This requires a USB stick with CloneZilla, and another drive to save images to, preferably not FAT/FAT32 formated as FAT32 can only store up to 2GB file size. I use EXT4.