I am using a virtualbox Version 5.2.14 r123301 (Qt5.6.2) on a Windows 7 EE SP1 host.

I have run so far and with no problem an Ubuntu 16.4 VM, with the help of Guest Additions. Copy/paste from/to host was possible, as well as folder sharing.

But yesterday, my host suddenly crashed and I had to restart it : the VM was thus not closed the proper way. And I realized as a consequence that I cannot copy/paste anymore, or see whatever is on my host from a previously shared folder (it appears on the fs, but is empty!).

I have tried to reinstall back the guest additions from command line (apt-get install VBox-Guest-Additions.iso), and run them : but I ended up loosing my full screen (now ubuntu is just a small window in the middle of my virtual box main window)... I got the folder sharing back, though, but this would be nearly acceptable if I had not lost the Guest Additions CD mounting in the meantime.

It already arrived once, and I ended up recovering and old working image (loosing a lot of recent data in the operation, even though all critical ones were on a remote repo)

Any tip, idea on what I can do to restore this without building a new VM or loosing a lot of data??


I eventually found the right way (didn't expect to fix it that fast this time!), combining two solutions

I followed those steps :

  1. https://askubuntu.com/a/850131/834808 => step 4 & 5
  2. apt-get install --reinstall linux-image-$(uname -r)
  3. reboot
  4. from the VM host menu, "devices" > "insert Guest addition ISO CD"... and let it autorun

Everything is now back : copy/paste, full screen, folder sharing, and my mood!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.