VirtualBox Snapshots With Raw Disk Access
Several times I have used VirtualBox raw disk access. Raw disk access is a handy feature.
Unlike a virtual disk I did not know whether VirtualBox snapshots supported raw disk access. I never had a reason to use or test the idea.
I tested snapshots with raw disk access. I created a snapshot. I booted the VM. I created a dummy text file on the disk. I powered down the VM. I restored and deleted the snapshot. I booted. The dummy text file did not exist. That implied snapshots supported raw disk access.
More digging reveals that when a snapshot is created the VirtualBox software makes changes to the snapshot and not the original disk, whether virtual or raw disk. When a snapshot is restored the virtual or physical disk is restored to the original state. In hindsight then, there is no reason why snapshots should not support raw disk access.