How do you unmount a busy device?

How do I force Umount device busy?

3 Ways to Force Unmount in Linux Showing “device is busy”

  1. 1) With lsof. The lsof (list open files) command displays a list of all open files and the processes associated with them on a specific file system, directory, or device. …
  2. 2) With fuser. …
  3. 3) Lazy unmount. …
  4. Conclusion.

22 февр. 2011 г.

How do I force unmount in Need for Speed?

You can use umount -f -l /mnt/myfolder , and that will fix the problem.

  1. -f – Force unmount (in case of an unreachable NFS system). (Requires kernel 2.1. …
  2. -l – Lazy unmount. Detach the filesystem from the filesystem hierarchy now, and cleanup all references to the filesystem as soon as it is not busy anymore.

How do you unmount a volume?

There are three steps to unmounting a volume:

  1. Get the volume’s mount point with df if you don’t already know it: sudo df —human-readable —print-type. …
  2. Make sure the volume isn’t in use. …
  3. Unmount the volume with umount .

19 июн. 2018 г.

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Can we unmount?

You can use the umount -f option to forcibly unmount a file system that is busy in an emergency situation. This practice is not recommended under normal circumstances because the unmounting of a file system with open files could cause a loss of data. This option is only available for UFS and NFS file systems.

What is lazy unmount?

With lazy unmount, you can safely unmount the volume while the software is still running, mount another volume on to that same mountpoint and command the software to reopen files.

How do I kill a .NFS file?

So, in order to remove the file completely you must kill the process that has it open. If you want to know what process has this file open, you can use ‘lsof . nfs1234’. Note, however, this will only work on the machine where the processes that has the file open is running.

How do I unmount Dev sda1?

You can’t if you want to continue using ubuntu. /dev/sda1 is your main partition and it cannot be changed to another file system without reformatting. You need to use a live cd or another OS you have installed on your hard drive you reformat it, but you can’t do it from inside ubuntu.

How do you unmount a root?

The only way to unmount root is to shutdown the system. Do what jilliagre says. You do not have to reboot. Run «swap -d /dev/dsk/c0t0d0s1» (or whatever the appropriate device is) ASAP, though, to remove that swap device.

How do I install NFS share?

How to Mount an NFS File System ( mount Command)

  1. Become superuser or assume an equivalent role.
  2. Create a mount point for the file system to be mounted, if necessary. # mkdir /mount-point. …
  3. Make sure the resource (file or directory) is available from a server. …
  4. Mount the NFS file system.
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What happens when you dismount a volume?

If you unmount a drive, Windows removes the volume mount point from the specified directory, dismounts the volume, and makes the volume not mountable.

How do I unmount a drive in command prompt?


  1. First, open Command Prompt as Administrator.
  2. Run the command mountvol and take note of the volume name above the drive letter that you want to mount/unmount (e.g. \? …
  3. To unmount a drive, type mountvol [DriveLetter] /p . …
  4. To mount a drive, type mountvol [DriveLetter] [VolumeName] .

What does unmount mean?

When you unmount it, the SD card disconnects from your device. If your SD card isn’t mounted, it won’t be visible to your Android phone.

How do I unmount in fstab?

To unmount a mounted file system, use the umount command. Note that there is no “n” between the “u” and the “m”—the command is umount and not “unmount.” You must tell umount which file system you are unmounting. Do so by providing the file system’s mount point.

How do you unmount a house?

You can see which processes are still using your old home directory (or anything else on the home filesystem) by running fuser /home or lsof /home . Once you kill these processes, you’ll be able to unmount /home . You can use fuser -k /home to kill them all (carefully check what they are before doing this!).

Can I unmount root?

3 Answers. / can’t be unmounted from the system, as / is in use (thus the message you see) by the system itself. You will need to do this procedure from a Live-CD. This typically happens when you have deleted, but still open files on your root filesystem.