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Mount shared folder on CentOS in VirtualBox
# The VirtualBox documentation[1] for how to install guest additions
# for Linux on a virtual host is somewhat messy. So here is what
# I did to make it work.
# Install the packages required
yum update
yum install gcc kernel-devel make
reboot
# Click: Devices/Install Guest Additions...
# Mount the ISO image with the guest additions
mkdir /cdrom
mount /dev/cdrom /cdrom
# Install guest additions
/cdrom/VBoxLinuxAdditions.run
# Share a folder from the VirtualBox control panel, giving it a share name.
ls /media/sf_<share_name>
# You could always mount the directory yourself as well
mkdir /a_folder_name
mount -t vboxsf the_share_name /a_folder_name
[1] http://www.virtualbox.org/manual/ch04.html

I'm running a fresh installation of CentOS 6 and running ./VBoxLinuxAdditions.run fails at:
Building the main Guest Additions module [FAILED]

Also, clicking Devices/Install Guest Additions apparently has no effect. The shared folder does not appear in /dev or /media

Any ideas?

@aderowbotham, make sure you update.

I ignored the part about the update since I did so a few days earlier and within that time span there was a kernel-update so I got headers for a different kernel and received the same error as you. Updating, then compiling the additions worked for me.

the5rb commented Jan 11, 2013

Sorry this might be a bit of a lame question but which ISO should i mount after installing guest additions?

Thanks! That worked like a charm!

Thank you!

bertao commented Nov 23, 2013

Great Tutorial

dtubest commented Dec 17, 2013

@travispaul, update works for me, but can you brief why a updating is necessary?

samayo commented Mar 25, 2014

@linnv I tried that link, although well presented .. is by no means better. It did not work for me, but only wasted my time.

@simon-eq ... and of course any guide that contains the phrase "before you do anything we need to disable SELINUX" should probably be avoided!

thx a lot!

dreampuf commented Jul 7, 2014

Solved my problem. thx

dunithd commented Aug 14, 2014

Thanks for sharing! Worked like a charm!

hi!
I have an idea! I want to get list of shared but not mounted folders in my guest CentOS. In future I will mount this all folders under /var/www/html with filtering by regexp (lsOfMySharedFolder | grep 'shared_' | mountEachOf) and reconfigure my web-server for using this folders as web-source.
So.. my question: can I get list of shared but not mounted folders under guest OS?

hm... i can use automount and get this list from ls /media | grep 'shared_'

qhu91it commented Jun 11, 2015

Hi, thanks for sharing, but my folder share is read-only (setting in VirtualBox is full access), I want full edit this folder in guest CentOS too.

I've installed anything like this tutorial, but with CentOS 7 I obtain when type "mount -l":
schermata 2015-09-24 alle 22 29 41

none /media/sf_<share_name>

so I can't do a new mount

mount -t vboxsf the_share_name /a_folder_name

because "the_share_name" is "none".

I would to do a new mount because I would a shared folder for web server (apache) in read-write, now the automount (/media/a_folder_name) is for root:vboxsf

thanks

Worked for me ... one improvement I can suggest is to remove the reboot line.

You need to reboot only if you catch an update of a something like the kernel itself in the yum update step ( which is IMO unnecessary ). Installing kernel-devel does not require a restart afterwards. They are just adding a bunch of header files that will be used by the VBox installer, later in the procedure mentioned above.

samayo commented Feb 4, 2016

@codemedic actually, reboot is important. I don't know why, but since I made this comment I regularly get the same error at least once, when I create/recreate my vBox and rebooting seems to fix the issue half the time. I am even here now, because I have the same problem, and guess what ... I worked with after the 2nd time.

gohrco commented Apr 30, 2016

Thank you - this instructional worked for me!

nice!!!

indi60 commented Jul 22, 2016

work like a charm on my centos 6.4

my issue is that its telling me I dont have permission for the folder

w4r0 commented Sep 16, 2016

Work great on my centos 7.2.

nlevchuk commented Jan 2, 2017

Hi. You need to install extra package bzip2 for VirtualBox >=5.0.

Thank you for this!

SteveDevOps commented Feb 28, 2017

Thx. Been looking for this. In my case, I was doing a fresh install off the latest v7, 1611 minimal iso and had to also reboot after the .run file was executed before /media/sf_<share_name> was seen. Not sure if a fresh terminal window would've also worked, but I was good after 2nd reboot.

annec22 commented Apr 20, 2017

Thanks! This worked for me with the following additional steps:

  • reboot after running /cdrom/VBoxLinuxAdditions.run
    sudo reboot
  • adding my user to vboxsf group (reference: link) because I encountered permission issues when opening the shared folder
    sudo usermod -aG vboxsf $(whoami)

rockts commented Apr 28, 2017

[vagrant@aliyun-local /]$ sudo mkdir /vv
[vagrant@aliyun-local /]$ sudo mount -t vboxsf vv_host /vv
mount: wrong fs type, bad option, bad superblock on vv_host,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

I executed the sudo mount -t vboxsf vv_host / vv after the above error
How to solve it?

rbncha commented May 18, 2017

is there any way to permanently mount the shared folder in every reboots ?

rkasavaraju commented Oct 9, 2017

Thank you worked for me. I had to do this first. yum install dkms binutils gcc make patch libgomp glibc-headers glibc-devel kernel-headers
then yum install kernel-devel
followed your instructions to get the shared drive working on CentOs7.4

sofuca commented Jan 21, 2018

Mount with fstab as so

<name_of_share> /path/to/mountpoint vboxsf default 0 0

/sbin/mount.vboxsf: mounting failed with the error: No such device

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