virtual machine - can't login

Meantime I have recover old version using last saved snapshot.
However I lost my last work.
Actually I have problem with mounting because restored snapshot does not mounts shared folder while corrupted version did.
Is the way to re-recover latest "corrupted" version once the login problem will be resolved?

Wojtek

finally, after several rebooting magically i have catch stable (?) verion and make snapshot, the remaining problem is with mounting, the automatic mount is not completed because shared folde "not found", when manually trying to do it the folloeng message is issued: "can't find in /etc/fstab"
In fact I found that windows shared folder now is stored under "UbuntuVirtual" folder. may I move up shared folder discarding extra "UbuntuVirtual"?

Add the line in fstab (I imagine you are mounting the hosts file systems) but tell it not to mount at boot using extra options.

Once the system boots a little further it should work and you can create the file /etc/rc.local by running the below:

sudo vi /etc/rc.local; sudo chmod +x /etc/rc.local

Then add the below 3 lines:

#!/bin/sh -e
mount /mount/path
exit 0

Obviously change vi to your favourite text editor if you wish. This will give the system time to boot. Be sure to change /mount/path to where you are actually mounting the file system. Only you will know this

https://askubuntu.com/questions/421585/how-can-i-prevent-auto-mounting-of-a-partition-in-fstab

You need the "noauto" option