Cfxtrjtrk

So in the setting of virtualbox shared folder, I already has the click the set-up: auto mount and make permanent. My shared folder is named as VM-share

Then I log into the terminal of guest linux to type in the following commands:

$ sudo mount -t vboxsf VM-share ~/share/

It gives me the following error message:

mount: wrong fs type, bad option, bad superblock on VM-share,

       missing codepage or helper program, or other error



       In some cases useful info is found in syslog - try

       dmesg | tail or so.

So I googled it and follow the instructions on this page: Why do I get "wrong fs type, bad option, bad superblock" error?

to install both the "sudo apt install nfs-common" and "sudo apt install cifs-utils"

However,when I repeat the command "$ sudo mount -t vboxsf VM-share ~/share/" It still gives me the same error message as before. I typed in "dmesg | tail", the following is the message:

[    8.743003] IPv6: ADDRCONF(NETDEV_UP): enp0s3: link is not ready

[    8.745374] e1000: enp0s3 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX

[    8.752152] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s3: link becomes ready

[    9.633147] floppy0: no floppy controllers found

[    9.633209] work still pending

[ 3128.376259] vboxsf: Successfully loaded version 5.1.16_Ubuntu (interface 0x00010004)

[ 3128.376457] sf_read_super_aux err=-22

[ 5762.008076] sf_read_super_aux err=-22

[ 6052.591669] sf_read_super_aux err=-22

[ 6138.926441] sf_read_super_aux err=-22

So How should I do to mount the shared folder?

It turns out the reason that I could not mount is because I did not install the vboxguestaddition version. So if you follow the steps here:

1. https://www.howtogeek.com/189974/how-to-share-your-computers-files-with-a-virtual-machine/




2. Ignore the windows part above, then follows the step here to install the guest additon: https://virtualboxes.org/doc/installing-guest-additions-on-ubuntu/




3. Then the file will be automatically there, but you might come across permission issue, check this page : https://askubuntu.com/questions/189200/getting-access-to-var-www.

I hope it helps people who might come across the same issue as I did.

cd to the /media folder and create a dir with the same name as the folder you created/shared in the host machine shared folder:

cd /media

sudo mkdir nameOfMySharedFolder

mount the folder with the following command:

sudo mount -t vboxsf nameOfMySharedFolder /media/nameOfMySharedFolder

watch a video for full description of process
https://www.youtube.com/watch?v=I5cV0V7vLJw
p.s. the sudo may or may not be necessary