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==Find process that block unmounting a partition or CDROM== You want to unmount a CDROM or a partition and get
umount: /boot: device is busy? Just follow these steps to find out who blocks the partition: # lsof /boot COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME tail 8022 Sash 3r REG 3,1 1183 2022 /boot/grub/grub.conf This output shows us that we got a tail command accessing /boot/grub/grub.conf. You can either kill the given process with its PID or search through your consoles and shut down the programm using the file.
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