Solaris > Forcefully unmount the cdrom/floppy disk

fuser command displays the PIDs of processes using the specified files or file systems. You can use fuser command to specifies a file on a mounted file system or a block device that is mounted. All processes accessing files on that file system are listed using -k option you can forcefully kill mounted file system. It sends the SIGKILL signal to each process. Since this option spawns kills for each process, the kill messages may not show up immediately. No signals will be sent to kernel file consumers.

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1) Use the fuser command to see who is accessing your device:
(For example if someone opened file on CDROM)

# vi /cdrom/cdrom0/somefile.txt

(Press CTRL + Z)

# eject cd
# fuser –u /cdrom/cdrom0

2) Kill the process-accessing device:

# cd /
# fuser –k /cdrom/cdrom0
# eject cd

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