The OS is realy locked up, the reason it's so hard to impossiable to change. I know of NO virus for the Snap OS. It's not something virus writer go after. They want a High Target Zone.
Improper shut down is the reason for if any file corruption. With limited ram it is minimal. Yet the extra cache (8meg) now in harddrives increases the risk.
Any way that's what UPS units are for.
Snaps will always run a chk disk on restart on any improper shutdown.