diff --git a/source/clear-linux/get-started/bootable-usb/bootable-usb.rst b/source/clear-linux/get-started/bootable-usb/bootable-usb.rst
index 3994b20f..e0ac2a2a 100644
--- a/source/clear-linux/get-started/bootable-usb/bootable-usb.rst
+++ b/source/clear-linux/get-started/bootable-usb/bootable-usb.rst
@@ -78,7 +78,7 @@ Burn the |CL| image onto a USB drive
       ├─sda8   8:8    0    30G  0 part /
       └─sda6   8:6    0   7.9G  0 part [SWAP]
 
-#. You must unmount a USB drive before you can burn an image onto it. Note that
+#. You must unmount a USB drive before burning an image onto it. Note that
    some Linux distros automatically mount a USB drive when it is plugged in.
    Unmount a USB drive with the :command:`umount` command followed by the device
    identifier/partition. For example:
@@ -93,7 +93,11 @@ Burn the |CL| image onto a USB drive
 
    .. code-block:: bash
 
-      dd if=./clear-[version number]-[image type] of=<your USB device> bs=4M status=progress && sync
+      dd if=./clear-[version number]-[image type] of=<your USB device> oflag=sync bs=4M status=progress
+
+.. caution::
+
+   |CAUTION-UNMOUNT-USB-PARTITIONS|
 
 .. _bootable-usb-mac:
 
diff --git a/source/substitutions.txt b/source/substitutions.txt
index 6790a2c3..20c6b780 100644
--- a/source/substitutions.txt
+++ b/source/substitutions.txt
@@ -9,3 +9,8 @@
 .. |CAUTION-BACKUP-USB| replace::
 	Burning an image formats the USB drive, and will destroy all pre-existing
 	content.  Back up your data before proceeding.
+
+.. |CAUTION-UNMOUNT-USB-PARTITIONS| replace::
+	Not fully unmounting the USB drive before burning an image could cause
+	file system checksum errors in it. If this happens, burn the image again
+	ensuring all the USB drive partitions are unmounted first.