diff --git a/public/device.te b/public/device.te
index c68b515cc..1ab08b470 100644
--- a/public/device.te
+++ b/public/device.te
@@ -80,18 +80,23 @@ type root_block_device, dev_type;
 type frp_block_device, dev_type;
 
 # System block device mounted on /system.
+# Documented at https://source.android.com/devices/bootloader/partitions-images
 type system_block_device, dev_type;
 
 # Recovery block device.
+# Documented at https://source.android.com/devices/bootloader/partitions-images
 type recovery_block_device, dev_type;
 
 # boot block device.
+# Documented at https://source.android.com/devices/bootloader/partitions-images
 type boot_block_device, dev_type;
 
 # Userdata block device mounted on /data.
+# Documented at https://source.android.com/devices/bootloader/partitions-images
 type userdata_block_device, dev_type;
 
 # Cache block device mounted on /cache.
+# Documented at https://source.android.com/devices/bootloader/partitions-images
 type cache_block_device, dev_type;
 
 # Block device for any swap partition.
@@ -100,9 +105,11 @@ type swap_block_device, dev_type;
 # Metadata block device used for encryption metadata.
 # Assign this type to the partition specified by the encryptable=
 # mount option in your fstab file in the entry for userdata.
+# Documented at https://source.android.com/devices/bootloader/partitions-images
 type metadata_block_device, dev_type;
 
 # The 'misc' partition used by recovery and A/B.
+# Documented at https://source.android.com/devices/bootloader/partitions-images
 type misc_block_device, dev_type;
 
 # 'super' partition to be used for logical partitioning.