Updated Windows in Parallels. Lost 50GB on Mac Storage.

[I Need a Drink]

I just updated my Parallels VM of Windows 10 to the October Update and after it finished I lost about 50 GB of storage on my Mac. I have already deleted the Windows.old file, using Disk Cleanup in Windows, and I reclaimed about 26GB of storage in the Parallels utility, (which did not change the storage numbers in About my Mac) but I still show that I have 50GB less storage on in About my Mac. Anything I can do?

 

[keysofanxiety]

It could be the virtual memory, IIRC Windows has the page size set to the amount of RAM you have on your machine.

I’m not sure though. Best to run OmniDiskSweeper to get an idea of what’s taking up space: https://www.omnigroup.com/more/

 

[bwintx]

I just updated my Parallels VM of Windows 10 to the October Update and after it finished I lost about 50 GB of storage on my Mac. I have already deleted the Windows.old file, using Disk Cleanup in Windows, and I reclaimed about 26GB of storage in the Parallels utility, (which did not change the storage numbers in About my Mac) but I still show that I have 50GB less storage on in About my Mac. Anything I can do?

https://www.zdnet.com/article/microsoft-pulls-windows-10-october-update-version-1809/

Have heard other reports that this Windows bug has affected VMs, too, which makes sense since the default for Parallels is to share storage between the host and guest OSs.