>the disk is configured as raid1 and mounts as /home while booting the system. i have not opened any other session than >the session i am using to execute the command 'umount /dev/md1' >But system shows that /home is busy. i have no idea where home is used. i am in / directory and have not opened any file >under /home. >Any help will be appriciated Have you tried stopping the software raid device: raidstop /dev/md1 Regards, MB