Change mounting point linux

Ubuntu Documentation

It is sometimes necessary to move mount points, for any number of reasons. Perhaps you keep separate partitions for each folder in the root of the filesystem, or maybe you need to store a large database, or perhaps you just want to change where your second hard disk or data partition mounts.

This guide is for basic changing of mount points. It will help you edit you file systems table configuration file, /etc/fstab, to achieve this. Please refer to this link about fstab; we will not be covering details from that page here, so it is recommended reading to accompany this guide.

If you are using external disks, you do not usually want to create mount points in fstab, but rather let them mount automatically based on their partition label. In this case you can relabel the partitions instead — see RenameUSBDrive.

If you are looking to create a separate /home partition, see Partitioning/Home/Moving.

Getting Started

To change mount points, we must edit the fstab file (see link above), so let’s open it and have it fork to the background with the & symbol. For Ubuntu, open a terminal and run:

Remember, the following are examples. Do not copy and paste them to your system; they will not work for you.

Basic Example

Let’s say we want to change a mount point from /media/disk2 to /mnt/backup. First, unmount the partition, delete the old mount point, and make the new mount point.

You must know which partition you want to change, so find what you are looking for by cross referencing the contents of fstab with the output of this command:

The output may look something like this:

Locate the entry you want to change. Let’s say you discover that the device is /dev/sdb1. Then you will change the line in fstab from something like

What’s that? It has UUID= instead of a /dev location? UUIDs are just newer way of identifying partitions — to view correspending /dev locations, you can run one of these commands: It is recommended that you keep the UUID instead of changing that column of fstab to a /dev location, but either will typically work.

Now that you have changed fstab, save and close the file. You can now remount everything in fstab, including the partition you changed, by running

Advanced Example

Some users have each directory in the root of the filesystem mounted on different partitions. While this isn’t generally recommended to beginners, this method has its purposes, which will not be covered here.

Let’s say your fstab file looks like this:

I have isolated 3 mount points that will be important and surrounded them with «#####».

So now, you want to change /dev/hda6 from /usr/local/mysql to /var/lib/mysql. First, unmount the partition, delete the old mount point, and make the new mount point.

Your first idea would be to simply change the mount point so that the relevant portion of fstab looks as follows:

However, you have a problem. If you reboot the computer, you will get an error like

Why? The main problem is that you are mounting /var/lib/mysql before /var. As the original documenter of this page put it, the mount order must be like trunk first then limbs. You should mount the filesystem in alphabetical order, with subdirectories being mounted after their parent directories. You must move /dev/hda6 down in the file, so that the relevant portion of the file now reads:

Having Problems?

If your partition won’t initially unmount, make sure all programs using data on that device are closed, including nautilus (the file browser), and try a lazy unmount:

In this case, is either the mount point or the /dev location.

If you get the error rmdir: failed to remove `test': Directory not empty, the partition is not unmounted correctly, see #1.
Getting errors when you try to mount? Be sure that you have created the new mount point and have spelled it correctly in the directory structure and in fstab. Do not use mount points with spaces in the name — while this is possible, it is a pain to deal with and is not worth the trouble. If you have this problem, it is creating issues in your fstab file because the parser thinks that whatever is coming after the space is the next column in fstab.

Getting Mounting Local File System Failed at boot time? Refer to the Advanced Example.

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How to change mounting point?

By some reason Plex Media Manager won’t recognize my partition(/media/radibg2/Radi/). I’ve tried to start

(this is what the plex shortcut which is showing in the search runs) as sudo but it again didn’t find the files? It loads the partition empty. In the Plex forum answered me to change the mounting point to /media/Radi and it will load the files, so how to do?

3 Answers 3

Firstly get to know the partition reference. Run sudo blkid and note the UUID of the partition.

Next you need to modify your /etc/fstab file to point to the desired mount point. Run sudo xdg-open /etc/fstab and add a line or modify the line referencing the partition.

An example line:

Then reboot your computer or run sudo mount -a

Copy all the files and folders from «/media/radibg2/Radi/» to «/media/Radi».

Then unmount your partition

Edit your fstab file:

Change the mount point to «/media/Radi» from «/media/radibg2/Radi/» in fstab file and save the file

Now remount your partition with the mount point «/media/Radi»

Hope this helps!

Are you able to see & read/view the media files at all? And x-www-browser is just a link to a regular web browser (firefox here), but apparently that needs Avahi to be working. And the help webpage below says the link may really be http://localhost:32400/manage/index.html It should work from any connected computer too (replacing localhost with the computer’s ip). But running your web browser with sudo shouldn’t affect the results.

After browsing https://forums.plex.tv/index.php/topic/26727-how-to-plex-media-server-on-ubuntu/ it appears that Plex runs as it’s own user, so maybe the plex user doesn’t have read permission on the media files.

If you want to quickly and temporarily add a second mount point (to test if plex will see the media files mounted somewhere else) you can bind mount it to another directory with mount —bind olddir newdir (kind of like «linking» the two directories)

Then to change the mount point permanently just edit it’s line in /etc/fstab changing the old /media/radibg2/Radi/ into /media/Radi (FYI lsblk will tell you what partition is currently mounted where).

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How to change mountpoint name?

I am working in ubuntu, this is what df -h shows:

Now I want to change the name of /mnt to /data directory instead. I want all the content to stay where it is, the only thing that has to change is the name of the drive mountpoint.

Here is what I have in /etc/fstab file.

Could you please explain the commands necessary and the files to edit?

3 Answers 3

It goes without saying that you should be careful, and understand what each command does before running it — you might also need to make sure that nothing is using the files while you do this.

Make the new mountpoint

unmount the current mountpoint

edit /etc/fstab and change /mnt to /data

mount the new location

It is not recommended to remove the /mnt directory because in part of Linux standard system tree, but you can remove the old mount point, named for example /old/mnt/path with this command:

because a mount points is a directory.

A little alternative would be renaming /mnt to /data after umount. Also it would be better to change the label for it. e.g. for xfs file type:

Following things to make sure before changing the mount point.

1. Is there any change in username and group of the mount. if yes make sure service account user and group are created.
2. The mount name folder should exists in the /home/ directory, if not do create an empty folder with the same name you wanted the mount to be.
3. Verify the /home/ mount folder user:group are correct.
4. Now use umount command to unmount the mount you wanted.
5. use mount command to mount the file system you wanted to rename.

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Linux Mint Forums

Welcome to the Linux Mint forums!

Change the mount point of /home

Change the mount point of /home

Post by mandrake88 » Thu Jan 05, 2012 1:59 pm

I’m using mint lxde 11 in my laptop.

1 HDD with 3 partitions mounted as follow:
a) /
b) /home
c) swap

I want to move the /home directory into the / partition, because i wan’t to use that other partition for other thing. But without loss any data stored in /home

Re: Change the mount point of /home

Post by remoulder » Thu Jan 05, 2012 2:09 pm

[Edit] your original post and add [SOLVED] once your question is resolved.

“The people are my God” stressing the factor determining man’s destiny lies within man not in anything outside man, and thereby defining man as the dominator and remoulder of the world.

Re: Change the mount point of /home

Post by mandrake88 » Thu Jan 05, 2012 2:25 pm

Re: Change the mount point of /home

Post by remoulder » Thu Jan 05, 2012 2:42 pm

[Edit] your original post and add [SOLVED] once your question is resolved.

“The people are my God” stressing the factor determining man’s destiny lies within man not in anything outside man, and thereby defining man as the dominator and remoulder of the world.

Re: Change the mount point of /home

Post by mandrake88 » Thu Jan 05, 2012 3:12 pm

Re: Change the mount point of /home

Post by remoulder » Thu Jan 05, 2012 3:14 pm

[Edit] your original post and add [SOLVED] once your question is resolved.

“The people are my God” stressing the factor determining man’s destiny lies within man not in anything outside man, and thereby defining man as the dominator and remoulder of the world.

Re: Change the mount point of /home

Post by Roken » Thu Jan 05, 2012 6:14 pm

You have to be a little careful with this — you can do it from a livecd most easily, but to do it from a running system you need to make changes in the correct order. There will be a home directory in /, but for the moment this is simply a mount point for your separate partition. To move home into / on a running system you need to prevent your current /home being mounted as /home, and ideally you need to do all this in a recovery environment as root (so that files in /home aren’t needed). SO here goes:

Boot recovery mode and log in to the terminal (as root if you can). You can omit «sudo» in the following if you are able to log in as root:

this should preserve all attributes and ownership when copying.

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How to change mount points?

I’m not really good at this mounting/unmouting thing on Centos, so here goes my question:

With df -h I get the following overview:

How do I get all of / onto /home and make that my default? I cant run anything becuase / is full and seems to be the default.

Here is the partition mapping.

2 Answers 2

Don’t. It’s not the mount points that need to change. It’s your partition sizes. Your safest option is to use gparted.

It’s a graphical front end for a very powerful partitioning program. You need to slide the partitions around to give root more space. This may quite literally take hours or days, depending on how far your root partition is from your home partition. If you need additional assistance. Post your partition mapping.

You cannot simply move «all» of / onto /home. The df -h output clearly shows that, everything is being stored in / which is not a good practice at all. Spare the / partition from any application or user data. Now, to get rid of this situation, use any of the following. 1) if there is enough free space on the vg, you can extend centos-root lv on the fly. 2) If there is not free space on the vg, move userfiles/application from /. This can be useful even if you choose 1. 3) If there is not free space on the vg and centos-home is not xfs then unmount /home, shrink centos-home lv, and add that free space to centos-root.

Use a seperate partition/lv (preferably /opt) for installing application

Not the answer you’re looking for? Browse other questions tagged linux centos mount or ask your own question.

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