How to unmount a Block Storage volume

Reviewed on October 21, 2025

Unmounting a volume means detaching it from the operating system so it is no longer accessible. You can do this if you want to stop using it, prevent data corruption, or plan to detach it from your Instance and attach it to another. This page shows you how to unmount a volume from the operating system using the umount command.

Before you start

To complete the actions presented below, you must have:

A Scaleway account logged into the console
Owner status or IAM permissions allowing you to perform actions in the intended Organization
Created an SSH key
Created an Instance with a Block Storage volume attached and mounted to it

Open a terminal and use the following command to connect to your Instance. Make sure that you replace <your_instance_ip> with your Instance's IP. You can also find the SSH command in your Instance's Overview tab in the Scaleway console.
```
ssh root@<your_instance_ip>
```

Run the lsblk command to check where your volume is mounted. An output similar to the following displays:

root@scw-heuristic-shtern:~# lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
sdb       8:0    0 18.6G  0 disk /mnt/block-volume

Run the command below to unmount the volume to remove it from your current setup. Replace /mnt/block-volume with your mount point.
```
umount /mnt/block-volume
```
Check that the volume is no longer mounted in the system with lsblk. The sdb volume is no longer mounted at /mnt/block-volume.
```
root@scw-festive-agnesi:~# lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sdb       8:0    0 18.6G  0 disk
```
If you used Persistent Mounting, edit the /etc/fstab file and delete the line corresponding to your block volume.

Your Block Storage volume is now unmounted from your Instance.