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I am able to mount my drive manually like this (ubuntu):

sudo mount -t vboxsf C_DRIVE /mnt/saga_c

But when I try and add it to my fstab it does not mount when I restart the machine. Is there something wrong with my /etc/fstab line:

C_DRIVE         /mnt/saga_c     vboxsf   defaults         0   0

Do I need something in addition to the vboxsf? Or is there something else I am doing incorrectly?

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I'd try adding an explicit auto to the mount options. It can't hurt and quoth mount(8): "Some of these options could be enabled or disabled by default in the system kernel." –  msw May 29 '10 at 20:17

4 Answers 4

up vote 11 down vote accepted

Try removing the "defaults 0 0" part. Just a hunch.

Found this (put this instead of the defaults):

Report back. :)

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Have to leave right now but I will try it tonight and get back. Thanks! –  stephenmm May 29 '10 at 21:59
This is how my fstab looks now and it seems to be working. Thanks! C_DRIVE /mnt/saga_c vboxsf auto,rw,uid=1000,gid=1000 0 0 –  stephenmm May 30 '10 at 21:06
After a night of frustration, here I am with a satisfied smile on my face. Thank you! –  kitsched May 5 '13 at 0:41

Running debian jessie as host, i used the option comment=systemd.automount in my /etc/fstab to get it working (in addition to the suggestion of Azizur):

Share /var/sfshare vboxsf auto,rw,uid=33,gid=33,umask=0007,comment=systemd.automount 0 0

uid, gid and umask were set for compatibility with owncloud (v7.0.4) to use the mount point as data folder.


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After quite a bit of searching I found this VirtualBox/SharedFolders Troubleshooting.


sudo chmod 777 /mnt/saga_c

This worked for me.

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This is what worked for me on Ubuntu 11.10 Server:

/etc/fstab line:

sites   /home/rob/sites vboxsf  auto,rw,uid=1000,gid=33 0 0

uid 1000 = my user, gid=33 www-data (apache group on ubuntu..)


mount /home/rob/sites
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