try "lsof /cdrom"? It says the mount point, not the device, might be busy.
On 8/16/19 10:23 AM, Helmut Jarausch wrote:
Hi, I have a very strange effect on my Gentoo system. First, I've check that /dev/sr0 points to the correct device (from dmesg) For an empty drive I get 1 # mount /dev/sr0 /cdrom mount: /cdrom: /dev/sr0 already mounted or mount point busy. 2 # lsof /dev/sr0 3 # umount /dev/sr0 umount: /dev/sr0: not mounted. Does anybody know what's going on here? Many thanks for a hint. P.S. I have checked this with two physically different drives.
