How to unmount/detach volume from Linux and Windows VM on WEkEO Elasticity
![../_images/button_orange_cf24.png](../_images/button_orange_cf24.png)
If you want to detach volume from VM first you have to unmount it.
Linux
Make sure you know mount point of volume you want to detach.
Check a mount point in “Mounted on” column.
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 3.9G 0 3.9G 0% /dev
tmpfs 798M 6.1M 792M 1% /run
/dev/sda1 30G 3.5G 26G 12% /
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sdb 98G 61M 93G 1% /my_volume
tmpfs 798M 0 798M 0% /run/user/1000
Unmount the volume.
$ sudo umount /my_volume
If volume is busy you can use option -l or -f to force unmount.
Important
Make sure that forcing unmount does not corrupt your files.
umount: /my_volume: target is busy.
$ sudo umount -l /my_volume
If you are sure the volume is free to unmount, use the following command.
$ sudo umount -f /my_volume
Windows
In your Windows VM open Administrative Tools -> Computer Management -> Disk Management.
Choose a volume you want to unmount. Right-click and select Change Drive Letter and Paths.
![../_images/ofj_detach-01.png](../_images/ofj_detach-01.png)
Select the volume’s drive letter and click Remove.
![../_images/ofj_detach-02.png](../_images/ofj_detach-02.png)
Click “Yes” if “Are you sure you want to remove this drive letter?” prompted.
![../_images/ofj_detach-03.png](../_images/ofj_detach-03.png)
Now in “Disk Management” you can see your volume does not have a drive letter.
![../_images/ofj_detach-04.png](../_images/ofj_detach-04.png)
When the volume was unmounted correctly you can detach it in your Horizon Dashboard.
More manuals for Windows you can find here