What should I do if I encounter a “device is busy” error after running umount?

If you receive a “device is busy” error message when executing the umount command, it means that the device is currently being used by the system or another program, and cannot be unmounted successfully. To resolve this issue, you can try the following methods:

  1. Make sure that no programs are currently using the device or accessing files on the device. You can use the lsof command to see which programs are using the device, and then close or kill those programs.
  2. If there are processes accessing the device in the current directory, try switching to another directory before attempting to uninstall again.
  3. If it is unclear which program is using the device, you can try to force an unmount by using the command umount -l or umount -f.
  4. If none of the above methods work, you can try uninstalling the device again after rebooting the system.

Please be aware that there is a risk of losing data or damaging files when forcibly uninstalling a device, it is recommended to backup important data before proceeding with this operation.

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