When attempting to unmount a device, an error is returned stating the device is unable to be unmounted and returns the message that the device is busy.
# unmount /mnt/cdrom unmount: /mnt/cdrom device is busy
This is usually because a process is still using a resource on the mounted device.
Red Hat Enterprise Linux ships with an utility named
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.