Yesterday Time Machine saved my life once again even though i strongly suspect it also was the culprit of the crash. I mean, what happens when Time Machine backs up my pvm file while working in Windows...? The last six months i've had the "APFS fsroot tree is invalid" problem twice and the pvm file is to blame. I believe this has to do with Time Machine backing up the pvm file while working in Windows. The first time i formatted my hard drive and started all over again but this time i restored the pvm file after hours of research. Voila, everything works great again. Because of this i added "~/Parallels" to the list of folders Time Machine should exclude. Still i want my virtual machine backed up so my question is about SmartGuard... I have now set the SmartGuard on and ticked the "Optimize for Time Machine" box but the Parallels folder is still excluded from Time Machine. Do i have to include the Parallels folder in Time Machine or are snapshots stored elsewhere? Also i would like to know if someone else have come to the same conclusion as i have?