Editing VirtualBox Installation with Centos 7 (section)

====  Step 9:  Fix Permission Problems ====

Even though we set things up with 'Access=Full' above, there is one remaining
step to realizing that situation.  We must add the local user to the vboxsf
group.  Carry out the following steps from a terminal window:

<syntaxhighlight lang="bash">
sudo vigr
</syntaxhighlight>

and enter your password.  This will take you into the system groups file.  Use
the down-arrow key to go to the bottom of the file, to the line that begins
with vboxsf.  You will need to add the local user account name to this line.
Hit "i" to go into insert mode.  Use the right arrow key to go to the end of
the line, and add the local user account name.  Hit "Ctrl+[" to get out of
insert mode.  Hit ":" to get to the command line mode of the editor. Type "wq"
to save changes and exit.

We will now do the same thing to the shadow group file:

<syntaxhighlight lang="bash">
sudo vigr -s
</syntaxhighlight>

and enter your password.  This will take you into the system shadow groups file.  Use
the down-arrow key to go to the bottom of the file, to the line that begins
with vboxsf.  You will need to add the local user account name to this line.
Hit "i" to go into insert mode.  Use the right arrow key to go to the end of
the line, and add the local user account name.  Hit "Ctrl+[" to get out of
insert mode.  Hit ":" to get to the command line mode of the editor. Type "w!"
to force the saving of changes (this is a read-only file so we have to force
it).  Then, type "q" to exit the file.

Log out of the Linux VM and then log back in.  If you execute the command
'groups' from a terminal window that your local account will now below to the
vboxsf group, as well as its own default group and the wheel group.

If desired, you can make a symbolic link in your home directory to the shared
folder with:

<syntaxhighlight lang="bash">
cd
ln -sf /media/sf_Downloads HostDownloads
</syntaxhighlight>

If you open the sf_Downloads icon on the Desktop, you should now see the
Downloads folder on the host operating system.  This will now allow you access
to these files, and as well, you can put files created in the VM into this
folder, and your host OS will have access to them!