I know there are many questions already about this problem, but all the solutions that people came up with don't work for me. Personally I took the /etc/fstab approach. This is how the content of the file looks like

david@debian:~$ sudo cat /etc/fstab
# /etc/fstab: static file system information.
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=e5de59a3-0619-47f9-9a08-858e1e4f6415 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=b9140523-9685-48c4-a870-3604a8f58788 none            swap    sw              0       0
/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0
GitHub-VM       /home/david/Documents   vboxsf  uid=david,gid=david,dmode=774,fmode=664     0   0


  • GitHub-VM: is the folder that I'm sharing from my host system (macOS)
  • /home/david/Documents: is the folder on the VirtualMachine (Debian 8)

Of course I didn't forget to force the vboxsf kernel module to be loaded at boot time.

david@debian:~$ sudo cat /etc/modules
# /etc/modules: kernel modules to load at boot time.
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.

Sadly, after log-in in, my Document folder is not mapped to the host folder :(. What am I missing?

  • DId you try unix.stackexchange.com/questions/260481/… as well? Jan 10, 2017 at 19:44
  • That answer is poorly explained can't make much sense of it. If you could maybe edit it to make it more clear, than I could try :) Jan 10, 2017 at 19:48
  • I gave a specific answer instead. Jan 11, 2017 at 7:24
  • Can you mount manually? Jan 15, 2017 at 14:39
  • With Debian host (don't know for MacOSX), the user running virtual-box on the host has to be in group vboxusers, if not virtual box works fine, except for shared folders. Jan 15, 2017 at 14:41

2 Answers 2


The mount must happen after vboxadd-service.service is started. Systemd v220 has special fstab options for this, but unless you use backports, with the jessie version you have to create a custom mount unit instead. Put the following in /etc/systemd/system/home-david-Documents.mount:



WantedBy = multi-user.target

remove the corresponding line from fstab, systemctl enable home-david-Documents.mount and reboot.

Check your boot log and systemctl status home-david-Documents.mount if it doesn't work.


Another way in /etc/fstab GitHub-VM /home/david/Documents vboxsf x-systemd.automount,uid=1000,gid=1000,dmode=774,fmode=664

update-initramfs -u -k all Reboot

sorry correction wrong maschine.

  • This works really great, and after running systemctl daemon-reload, somehow automagically create the associated systemd service,
    – Stéphane
    May 22, 2019 at 9:25
  • This worked in getting me past boot but unfortunately, the folder was mounted owned by root, so I need to find some way to fix it... Oct 1, 2020 at 12:57

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