diff --git a/docs/linux/disk-management.md b/docs/linux/disk-management.md
index 2aecda4..5568437 100644
--- a/docs/linux/disk-management.md
+++ b/docs/linux/disk-management.md
@@ -63,6 +63,7 @@ vgreduce vg0 /dev/sdb1
 # Logical volumes
 lvdisplay
 lvcreate -L 10G -n lv_data vg0
+lvextend -l +100%FREE /dev/vg0/lv_data    # note the lowercase L
 lvextend -L +5G /dev/vg0/lv_data
 lvreduce -L -2G /dev/vg0/lv_data
 lvremove /dev/vg0/lv_data