I used to run Ubuntu 14.04 on parallels and everything was fine. When I upgraded to 16.04 it got stuck on

/dev/sda1: clean XXXXXX/XXXXXX files, XXXXX/XXXXX blocks

and now it won't boot.

  • Have you tried to choose upstart or recovery mode in grub to get into terminal and read some logs?
    – Dugi
    Aug 2, 2016 at 19:41
  • I have, but I can't even access grub menu :(
    – stevie00
    Aug 2, 2016 at 19:44
  • Looks like it's time for a clean install. Aug 2, 2016 at 19:59
  • sigh is there any way to recover my files from 14.04?
    – stevie00
    Aug 2, 2016 at 20:48
  • Can you boot the live USB? Aug 2, 2016 at 21:55

2 Answers 2


First, your files are intact, and your system is not "stuck." X-Windows is just not starting. As I said in a comment, you could use CTRL-ALT-F1 or SSH to log into the Parallels instance.

You need to update manually the Parallels tool, which fixes the video driver. You can follow the directions in this KB article. (It's for an older version of Ubuntu and Parallels, but the steps are the same.) http://kb.parallels.com/en/118776

In summary, you attach the "parallels tools linux iso" (it's in the Parallels.app bundle) to the virtual CD-ROM. Start the virtual machine. Use CTRL-ALT-F1 to get to a text terminal, login, mount the virtual cd, and run the install script. Once reboot, X-Windows will start correctly.

  • I followed the steps in your link. It worked for me. Nov 1, 2016 at 0:40
  • This saved my day.
    – KD.
    Dec 19, 2016 at 7:42

I had the same problem when upgrade from 14.04 but install libstdc++6 for Xenial will resolve it, got it from apt: relocation error: version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference

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