Questions tagged [umount]
Questions relating to the unmounting of the filesystem of media connected to the computer, whether that is done via software or manually by the user using the command-line.
101
questions
55
votes
4
answers
38k
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Small snap loop devices visible in gnome-disk-utility OR what is the function of snap ubuntu-core
I just realized using gnome-disk-utility (3.18.3.1) that my 16.04 installation is featuring several small loop devices.
In detail:
78 MB Loop Device (/var/lib/snapd/sn_ntu-core_352.snap -> /dev/...
3
votes
1
answer
150
views
sudo apt-get upgrade errors
I get the following errors when running the apt-get upgrade:
dpkg: error processing package nfs-common (--remove)
cannot remove /sbin/umount.nfs4: Bad message
E: Sub-process /usr/bin/dpkg returned an ...
0
votes
2
answers
7k
views
Can't Unmount dev/sda3 (boot device)
Please help a frustrated user.
I currently run only ubuntu 12.04: I cant seem to umount. I think the umount folder is lost. Tried all possible measures to no avail. Is there a way to force umount. I'...
-1
votes
1
answer
78
views
if running fsck from live media do you still need to unmount target partition
I've been having issues with my ubuntu server. Every day or two I'll lose the ability to remote connect to the server. When I connect directly I see lots of repetitive error messages with long ...
0
votes
2
answers
753
views
Can't unmount /dev/sda2
First I tried Gparted but couldn't unmount it
when I tried the terminal command sudo umount /dev/sda2
I got this message:
umount: /: target is busy
.
lsblk -f /dev/sda gives this:
NAME FSTYPE LABEL ...
35
votes
5
answers
40k
views
How do I find out which process is preventing a umount?
When I do
sudo umount /media/KINGSTON
I got
umount: /media/KINGSTON: device is busy.
I close all the windows and make sure all shell are pointing to other directories. How can I find which ...
8
votes
1
answer
6k
views
Partition cannot be unmounted "Volume is busy" on Ubuntu 18.04.1 . Offending process - jbd2/sdb4
With Ubuntu 18.04.1 on a fresh install, I sometimes cannot unmount my data backup partition. I was dd'ing a Linux iso from the partition /dev/sdb4 to a USB drive. Later, I exited the terminal, and ...
41
votes
6
answers
68k
views
device-mapper: remove ioctl on luks-xxxx failed: Device or resource busy
While I was away from my computer, my encrypted USB drive got accidentally unmounted somehow (although it was still physically connected at the time). I haven't been able to recover (haven't tried a ...
43
votes
3
answers
73k
views
How to umount non-sudo sshfs created directory
I used sshfs without sudo to create a directory like
sshfs [email protected]:/media/user/harddrive /temp/user/harddrive
but when I want to umount the /temp/user/harddrive directory with
umount /...
1
vote
1
answer
41
views
Firefox complaining about a running instance after crashing with umounts on Xubuntu
In order to run Firefox without allowing any changes to its configuration, I did setup a tmpfs and from it, create two overlays before launching the browser.
Script runs fine, creates and destroys the ...
3
votes
1
answer
4k
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Unmount by UUID?
I'm building a script and am able to mount by uuid using mount -U UUID, but I can't seem o unmount by uuid.
Is this type of operation possible? How would I do it? umount doesn't seem to have this ...
3
votes
2
answers
10k
views
unmount sshfs from mount point
mounted raspberry pi device via sshfs:
sshfs osmc@rpi.: /home/user/pi
mounting information:
user@azimuth:~$ mount | grep osmc
osmc@rpi.: on /home/user/pi type fuse.sshfs (rw,nosuid,nodev,relatime,...
16
votes
4
answers
42k
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How to unmount when umount hangs due to disconnected disk?
I have an external disk connected via USB that was accidentally disconnected uncleanly. Now lsing the directory in which it was mounted gives Input/output error. umounting the directory simply hangs. ...
0
votes
0
answers
36
views
umount2() for an NFS mountpoint returns EPERM, even when called as root
I'm running Ubuntu 20.04, but I've had this problem back to Ubuntu 14.04.
I've been trying to automate unmounting NFS mounts when my VPN connection closes, but no matter how I call "umount", ...
32
votes
3
answers
11k
views
Why do I need root privileges to umount a drive at the command line, but not in Nautilus? How to change that?
When I insert a thumb drive, media card, or USB hard drive, to unmount it via the command line, I need to use:
sudo umount /media/the_device
But, I can unmount the device in a file manager like ...
0
votes
0
answers
135
views
Is there a way to fix bad block without unmounting?
I was thinking about running a bad sector check up on my system. Is it possible to do that without unmounting the primary filesystem? I want to check it on the system that is currently running.
0
votes
1
answer
214
views
Unmount volume, and dependent mounts
I explain:
Currently I have:
A volume mounted to a directory, /mountDirectory
And I also have a local directory that has a mount bind to a directory on the volume:
/localDirectory mount bind /...
22
votes
3
answers
33k
views
Difference between --rbind and --bind in mounting
I am confused. Linux filesystem is a tree structure, with the root node(starting node) as the root directory.
Now let's suppose I have a folder abc at location /home/abc and another folder xyz at ...
0
votes
0
answers
280
views
Undo `mount --rbind /dev ./chroot/dev`
I've executed mount --rbind /dev ./chroot/dev for using in chroot'ed environment.
Then I wanted to unmount it and executed umount ./chroot/dev but it fails with error:
umount: ..../chroot/dev: target ...
6
votes
3
answers
18k
views
Failed to unmount /oldroot/dev warning during the shutdown or restart
After Upgrading from 18.04 to 20.04 I've notices several warnings during shutdown or reboot like:
Failed to unmount /oldroot: Device or Resource busy
Failed to unmount /oldroot/dev/pts: Device or ...
1
vote
0
answers
223
views
Desktop "eject" or "quit" does not unmount usb media
I use a USB device with SD-card slots. It works fine, but I cannot seem to unmount it on a proper way from user space.
Right clicking on the memory stick icon and selecting "eject" does ...
1
vote
1
answer
308
views
I got these error messages when trying to unmount /dev/sda3
I got these error messages when trying to unmount /dev/sda3.
root@marudhu:~# umount -t /dev/sda3
umount: bad usage
Try 'umount --help' for more information.
root@marudhu:~# umount -t/dev/sda3
umount: ...
0
votes
1
answer
62
views
How to identify which program is using a partition (and is stopping it from being un-mounted)?
Only one partition cannot be unmounted (on other drive than the one the system is installed on) . It is also the only ext4 partition on that drive, the other two are ntfs.
I am using dual boot, have ...
0
votes
1
answer
215
views
How to avoid race condition when mounting, copying files into, and umounting images
This script creates ten image files and copy over file(s) to them.
#!/bin/bash
# script to create multiple floppy images for installing hwp30
#+on virtualbox.
# umount image in case mounted
sudo ...
4
votes
2
answers
5k
views
Why does umount automatically remove the mount point of a drive that has been mounted with a file manager?
If I mount a drive using the file manager (I'm using PCManFM), the mount point is automatically removed when I run the umount command. However, if I mount by running mkdir and then mount, I have to ...
0
votes
1
answer
1k
views
Cannot umount /tmp. Both fuser and lsof show nothing locking that LV
I need to reduce my /tmp LV so I type this command :
$ sudo lvreduce -r -L -2G /dev/myVG/tmp
Do you want to unmount "/tmp" ? [Y|n] y
umount: /tmp: target is busy.
fsadm: Cannot proceed with ...
16
votes
2
answers
117k
views
umount: /: target is busy
When I ran the command umount /dev/mapper/ubuntu--gnome--vg-root I I got :
umount: /: target is busy
(In some cases useful info about processes that
use the device is found by lsof(...
0
votes
2
answers
926
views
I'm having an issue with when I'm trying to use umount command to unmount my usb flash drive
I'm using Virtualbox and SEED Ubuntu 16.04.
I'm trying to unmount my flash drive with the command sudo umount /dev/sdb1, assuming that my USB is attached as sdb1.
However I would get this error saying ...
1
vote
0
answers
829
views
Trying to use extundelete for recovering a "rm -rf"ed directory. But receiving this: extundelete: No such file or directory /dev/sda5
so I accidentally deleted a dirrectory using "rm -rf". I am trying to recover is using extundelete.
So far I have done these:
$ sudo umount -l /dev/sda5
$ extundelete --restore-directory {...
1
vote
2
answers
2k
views
Kubuntu 20.04 Hangs Before Every Reboot (Failed to umount /oldroot)
I'm running a fresh install of Kubuntu 20.04. Every time I reboot, it hangs for several minutes with the last line shown as:
[ OK ] Reached target reboot.
Several minutes later, it finally proceeds ...
0
votes
0
answers
84
views
Trying to install a fresh version of Ubuntu did not go well, now there is no OS installed at all
this is gonna be painful to read because it's been a very long time since I did anything with my laptop other than just idle use, but here goes:
I was having some issues with my Asus Model No. F555U, ...
0
votes
0
answers
132
views
"start" and "stop " missing of update-rc.d command
I noticed that Ubuntu is slowing down at restarting process after I set in /etc/fstab auto mount NAS directory using cifs.
The solution is found in this thread by Help Ubuntu ...
0
votes
1
answer
393
views
When should shared NFS dir be unmounted?
I am using NFS services to copy files from the shared directory to another directory on the client (not part of the mount). I don't need NFS services to be running at all times so, once the files are ...
1
vote
0
answers
272
views
How can I fix a stuck NFS without rebooting server?
My environment:
I have three servers in my studio. Server A is an NFS server, server B and C are NFS clients.
Server B and C mount A:/raid/data on local /data. SELinux is disabled, ufw is not ...
2
votes
3
answers
2k
views
Using `umount` for USB mounted ext4 volume without `sudo`
I mount a USB HDD used for intermittent plugin backup via the fstab entry:
# <file system> <mount point> <type> <options> ...
36
votes
3
answers
13k
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I accidentally ran "sudo umount -a" and now have no access to anything
Now I can't remount anything and get access back. How can I fix it?
sudo returns
sudo: effective uid is not 0, is /usr/bin/sudo on a filesystem with the 'nosuid' option set or an NFS filesystem ...
1
vote
0
answers
769
views
Trying to mount a re-writable CD to my file system
I am following along with "The Linux Command Line" 4th Internet addition. I am learning how to mount file systems and have been instructed to run the following commands to do so:
mount
In the books ...
0
votes
0
answers
1k
views
Ubuntu does not start due to too little disk space
In my computer I have 2 disks. I have one that runs Windows 10 and one that has Ubuntu on it. I also have a partition for my personal files (this is mainly used by Windows so it is a NTFS file system)...
1
vote
3
answers
752
views
Booting Ubuntu even if remote share is offline
In my /etc/fstab I use the following:
//192.168.5.167/H /mnt/ssd ssd credentials=/root/.smbreds 0 0
But in case if the drive on Windows is not connected or Windows machine is not running, Ubuntu ...
2
votes
1
answer
16k
views
How to rescan USB device?
Since when I use The Files to umount the USB device(not console umount command), ubuntu will also remove the block device, I can't click to mount that again. If I don't want to unplug and plug the USB ...
14
votes
1
answer
8k
views
How to check what are using the mounted disk when I want to eject it
The disk is mounted by sudo mount /dev/sdd5 /media/SDD/Docs and sudo mount /dev/sdd6 /media/SDD/Images and so on, thus there are some directories corresponding to the volumes of the mounted disk.
...
2
votes
1
answer
785
views
Finding ecrypt-recover-private mountpoint
After heavily struggling on mounting my ecrypted hdd, I now want to securely unmount the recovered hdd. I did it as proposed in this question.
It was mounted by using
$user> cd /media/$user/...
0
votes
1
answer
6k
views
How to mount an unmounted USB device Ubuntu using command? [duplicate]
I first eject device using sudo eject /dev/sr1. And then sudo umount /dev/sr1.
But now it's not showing me the device which i'm unmounted. I want to mount it using command.
0
votes
1
answer
642
views
mount --bind /dev sometimes "kills" tty until unmounted
I have a script that uses sudo mount --bind /dev other/dev and then later uses sudo umount other/dev to unmount. After some random number of runs, we can somehow enter an odd state where the main tty ...
4
votes
1
answer
3k
views
Local file system not properly unmounted during shutdown
I have a file system with two HDDs and several partitions mounted separately locally.
/root, /home, /usr, /var, /local/share, /home/bernhard/fotos/bilder, /backup are on separate partitions and are ...
3
votes
1
answer
7k
views
How to make umount wait, until a device is not busy?
I have a bash script file where I execute a bunch of commands.
#!/bin/bash
umount /media/hdd1
umount /media/hdd2
something1
something2
But since the comands later in the file work with the umounted ...
0
votes
0
answers
80
views
Repartitioning after LVM partitioning
I installed Ubuntu 16.04 using LVM method. Now while trying to re-partition HDD using Gparted, I saw that my HDD present situation is like this :
LVM is using the entire part of extended space. (...
1
vote
1
answer
313
views
Cannot hide Google Drive icon from nautilus menu
Ever since I had selected my google drive account as my default storage location in Déjà Dup, an annoying icon with the name of my account shows up at the right side of my nautilus menu.
When I ...
1
vote
0
answers
665
views
gparted gives an error when checking the xfs file system
I use ubuntu 16.04 (64). An additional, non-system drive is formatted in XFS. After a power failure, I decided to check it. Gparted report:
GParted 0.25.0 --enable-libparted-dmraid --enable-online-...
3
votes
1
answer
2k
views
Unmount SSHFS from Nautilus (with umount)
I can mount an SSHFS like this:
sshfs -o idmap=user SSH_HOSTNAME:/ ~/mountpoint
Now it's nicely displayed in Nautilus like a removable device with an eject button. On clicking that button though, I ...