I migrated my noteboook from Windows 10 to Ubuntu 18.04 recently. I wanted to keep my two virtual machines so I copied their Folders containing their .vbox .vbox-prev and .vdi files (Looking back I should have used the integrated export functionality). When I try to start the machines now on Ubuntu 18.04 Virtual Box aborts on start up with the following error message:

VD: error VERR_FILE_NOT_FOUND opening image file '/home/user/VirtualBox VMs/Ubuntu Mate 16.05/Ubuntu Mate 16.05.vdi' (VERR_FILE_NOT_FOUND).

Have I missed to copy something or is this related to the change of the operating system?

Is it possible to restore the virtual machines?

The vbox.log file:

00:00:01.798459 VirtualBox VM 6.0.0 r127566 linux.amd64 (Dec 18 2018 13:18:17) release log
00:00:01.798461 Log opened 2018-12-24T14:01:24.737853000Z
00:00:01.798462 Build Type: release
00:00:01.798464 OS Product: Linux
00:00:01.798465 OS Release: 4.15.0-43-generic
00:00:01.798465 OS Version: #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018
00:00:01.798480 DMI Product Name: 20H2S00700
00:00:01.798484 DMI Product Version: ThinkPad E470
00:00:01.798513 Host RAM: 15944MB (15.5GB) total, 13975MB (13.6GB) available
00:00:01.798515 Executable: /usr/lib/virtualbox/VirtualBoxVM
00:00:01.798516 Process ID: 8578
00:00:01.798516 Package type: LINUX_64BITS__UBUNTU_18_04
00:00:01.807559 Installed Extension Packs:
00:00:01.807572   Oracle VM VirtualBox Extension Pack (Version: 6.0.0 r127566; VRDE Module: VBoxVRDP)
00:00:01.808413 Console: Machine state changed to 'Starting'
00:00:01.808615 Qt version: 5.9.5
00:00:01.808625 X11 Window Manager code: 2
00:00:01.810852 Console: Machine state changed to 'PoweredOff'
00:00:01.814111 GUI: Show mini-toolbar for window #0
00:00:01.820202 Power up failed (vrc=VINF_SUCCESS, rc=NS_ERROR_FAILURE (0X80004005))
00:00:01.838190 GUI: Adjust mini-toolbar for window #0
00:00:01.838310 GUI:  Resize mini-toolbar for window #0 to 1920x1080
00:00:01.838358 GUI:  Move mini-toolbar for window #0 to 0x0
00:00:01.838998 X Server details: vendor: The X.Org Foundation, release: 11906000, protocol version: 11.0, display string: :0
00:00:01.839007 Using XKB for keycode to scan code conversion
00:00:02.321204 GUI: Aborting startup due to power up progress issue detected...
  • 1
    It does not appear you have put the VM in the correct location, /home/user/VirtualBox VMs/Ubuntu Mate 16.05/ – Ramhound Dec 24 '18 at 16:30
  • /home/user/VirtualBox VMs/ seems to be the standard now on my system for Virtual Box. The Folder /home/user/VirtualBox VMs/Ubuntu Mate 16.05/ contains the .vbox the .vbox-prev and .vdi file. Am I missing some file in this folder? – Noah Dec 24 '18 at 22:37
  • 1
    It works now. I renamed the files and removed all spaces in their names and now Virtual Box finds everything. Thanks @Ramhound – Noah Dec 24 '18 at 23:42
  1. I removed the hard disk from VM setting and try to add it again but not worked.
  2. then I closed the VBox application and open it again it gives me a message that one of the hard drives did not exist when I looked to the virtual media manager it points to the same hard disk then I release the hard disk.
  3. and go to the VM settings and insert the hard disk again and worked.

my solution (and my problem was) was just slightly different then the solution of @Mohannd here.

i got:

I reinstalled KUbuntu and dont changed my virtual machines (in the second HDD)

Whey I try to start the machines now on Ubuntu 20.04 Virtual Box aborts on start up with the following error message:

Runtime error opening '/media/x/dev_n/VirtualBox-Machines/kubuntu ava in 0ad/kubuntu ava in 0ad.vbox' for reading: -102 (File not found.).
/build/virtualbox-9t4MJt/virtualbox-6.1.16-dfsg/src/VBox/Main/src-server/MachineImpl.cpp[754] (nsresult Machine::i_registeredInit()).
Fehlercode: NS_ERROR_FAILURE (0x80004005)
Interface: IMachine {85632c68-b5bb-4316-a900-5eb28d3413df}

I guessed that I just need to correct the user number (1000 is good). Unfortunately, that was not the case, as can be seen here:

sudo ls -n
-rw------- 1 1000 1000 14448 Mär 14 11:50 'kubuntu ava in 0ad.vbox'

Virtual Box reading Error -102 File not found after reinstall Ubuntu

I just closed the VBox application and open it again.

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