Linux - How to find busy device, Locate the busy driver

How to find busy device

When you are trying to unmount a device drive, but it keep saying that your system or drive is busy.

  # lsof +D /mnt/drive-name

This will return the command and process ID of any tasks that is currently accessing the /mnt/drive-name directory.

By finding the Process-ID you can either end the process or kill the process to unmount the drive safely.

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