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.
99
questions
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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 ...
- 3
1
vote
1
answer
37
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 ...
user126247
0
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0
answers
27
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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", ...
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0
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0
answers
108
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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.
- 121
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1
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157
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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 /...
0
votes
0
answers
226
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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 ...
- 101
1
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0
answers
189
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
211
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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
41
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 ...
- 3,124
0
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1
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155
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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 ...
- 123
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 ...
- 2,091
0
votes
2
answers
535
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 ...
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1
vote
0
answers
700
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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 {...
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0
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82
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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
1
answer
296
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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 ...
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1
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0
answers
220
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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 ...
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36
votes
3
answers
13k
views
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 ...
- 377
1
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2
answers
2k
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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 ...
- 331
1
vote
0
answers
649
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 ...
- 143
6
votes
3
answers
16k
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 ...
- 311
0
votes
0
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1k
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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
679
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 ...
- 323
2
votes
1
answer
14k
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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 ...
- 21
1
vote
1
answer
3k
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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 ...
- 1,463
0
votes
1
answer
601
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 ...
- 101
3
votes
2
answers
9k
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,...
- 5,465
2
votes
1
answer
715
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/...
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22
votes
3
answers
29k
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 ...
- 361
3
votes
1
answer
6k
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 ...
- 816
0
votes
0
answers
67
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. (...
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1
vote
1
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287
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 ...
- 1,034
6
votes
1
answer
5k
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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 ...
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40
votes
3
answers
64k
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 /...
- 788
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vote
0
answers
583
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-...
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5
votes
2
answers
3k
views
Why unmount a partition before overwriting the disk?
How to create a bootable Ubuntu USB flash drive from terminal?
Why do guys here use umount first? I assume USB flash drive should be formatted first, so does umount format the disk, or just detach ...
- 669
3
votes
1
answer
2k
views
How to exclude files from ubdatedb?
Yesterday, while trying to unmount our (davfs2 mounted) work webdav server from my filesystem, I got device is busy.
Running sudo lsof | grep /mountpoint/of/davfs, revealed that the culprit was ...
- 10.2k
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 ...
- 106k
1
vote
3
answers
455
views
Allow certain exit codes to not abort execution in bash "-e" mode
If umount returns 0 as the exit code, this script continues.
Some times, the exit code is 127, I'm okay with it and the script
should continue. How can I modify the script to do such a "whitelisting"
...
0
votes
0
answers
2k
views
Contradictory mount errors
Can anyone explain how I can unmount a disk in order to perform an fsck? I get contradictory errors:
fred@ARAGORN:/media/fred$ sudo fsck /dev/sdd1
fsck from util-linux 2.20.1
e2fsck 1.42.9 (4-Feb-...
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votes
1
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128
views
How to clean '/dev/sdx' cache?
I'm facing a problem in my ubuntu system, as it is for testing, I usually issue the command:
echo "scsi add-single-device 0 0 0 0" > /proc/scsi/scsi
I'm just using the ata1 port.
When I finish ...
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votes
1
answer
580
views
How to umount usb drive? [duplicate]
I am a newbie Linux User
I wrote a Lubuntu image to my 8GB usb drive, and made it bootable, using the dd command.
After that I wanted to format it or make it umount but when I plug it to my PC I ...
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0
votes
0
answers
128
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"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 ...
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16
votes
2
answers
116k
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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(...
user636872
4
votes
1
answer
6k
views
How to unmount a live DVD/USB?
I need to burn a new live DVD (Debian 8.0) from an Ubuntu 16.04 live DVD.
the live DVD is the device /dev/sr0 mounted on /cdrom
the blank DVD to be burnt is also located at /dev/sr0
Changing the DVD ...
- 41
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vote
1
answer
376
views
How can I get a message that says when you can unplug a usb stick safely?
I have a memory stick. when data is being written, the led flashes. I right click, and select eject, the led will flash and when it stops I will unplug it.
Other memory sticks, do not have LEDs, how ...
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1
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2
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282
views
Graphical umount application
Is there some application to graphically view which partitions are mounted and be able to unmount them from the GUI? Like on Windows -> My Computer -> Eject.
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53
votes
4
answers
37k
views
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/...
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3
votes
1
answer
147
views
How can I safely remove an external disk using the launcher icon?
The following animation demonstrates how I tried to safely remove an external USB 2.0 hard disk. However, each time I click on safely remove, the disk is being mounted again.
Animation:
I can, ...
- 13k
0
votes
0
answers
44
views
Mount an ext hard drive and then delete the target mount folder
I'm new to Ubuntu server and wanted to set up Plex on it.
I have an old laptop running Ubuntu server 16.04.1
I got an WD external hard drive with a movies folder.
Mount point: /media/usb/plex_data/
...
- 121
0
votes
0
answers
683
views
Unable to mount /tmp to /mnt/tmp properly
I have a EC2 instance, and I have a very small /tmp size which I want to increase. So I tried to mount /tmp to /mnt/tmp using:
sudo mount -B /tmp/ /mnt/tmp/
This did mount it to /mnt/tmp. But when I ...
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