The following are examples of unmounting file systems.
To unmount the file system /dev/vx/dsk/fsvol/vol1
Unmount the file system:
# umount /dev/vx/dsk/fsvol/vol1
To unmount all file systems not required by the system
Unmount the file system mounted at /mnt1:
/mnt1
# vxumount /mnt1