About the only decently documented disk image format I've found is qcow2. [0] Which is usually not the best tool for the job. So very many of them are just hea

About the only decently documented disk image format I've found is qcow2. [0] Which is usually not the best tool for the job. So very many of them are just header details + "only works with our tools". [0] https://www.qemu.org/docs/master/interop/qcow2.html https://www.qemu.org/docs/master/interop/qcow2.html