Mounted virtual Windows disk disappeared/won't come back

If you read back through this thread you will see that I spent many hours working on this, and upgrading MacFUSE does not solve the problem.

It is not "high load" that causes the problem. It is "non trivial" load. Anything except very light use causes it. Essentially the mount is more or less useless for anything other than trivial use. It can also silently corrupt files.

 

Try to move VM to external drive,
Please also check, is situation occurring when only one or two software runs on both sides

 

Sorry to intervene, but I have to say this...

Two operating systems accessing the same partition seems very unadvisable, and most certainly if they access (read/write) the same file.

Only one operating system should have write access to a file system/partition.

 

I would also like to add that I don't think neither Windows or MacFUSE are prepared/expect for the occurrence of having another system that concurrently is accessing the same file system.