---
aliases:
- /2008/09/forcefully-unmount-disk-partition
categories:
- linux
date: 2008-09-17 15:14
layout: post
slug: forcefully-unmount-disk-partition
title: forcefully unmount a disk partition

---

<p>
 check which processes are accessing a partition:
 <br/>
 <br/>
 [sourcecode language="python"]lsof | grep '/opt'[/sourcecode]
 <br/>
 <br/>
 kill all the processes accessing the partition (check what you're killing, you could loose data):
 <br/>
 <br/>
 [sourcecode language="python"]fuser -km /mnt[/sourcecode]
 <br/>
 <br/>
 try to unmount now:
 <br/>
 [sourcecode language="python"]umount /opt[/sourcecode]
</p>