diff --git a/docs/Getting Started/Debian/Debian Bullseye Root on ZFS.rst b/docs/Getting Started/Debian/Debian Bullseye Root on ZFS.rst
index 4fb7e36..4091116 100644
--- a/docs/Getting Started/Debian/Debian Bullseye Root on ZFS.rst	
+++ b/docs/Getting Started/Debian/Debian Bullseye Root on ZFS.rst	
@@ -189,6 +189,11 @@ Step 2: Disk Formatting
 
      wipefs -a $DISK
 
+   For flash-based storage, if the disk was previously used, you may wish to
+   do a full-disk discard (TRIM/UNMAP), which can improve performance::
+
+     blkdiscard -f $DISK
+
    Clear the partition table::
 
      sgdisk --zap-all $DISK
diff --git a/docs/Getting Started/Ubuntu/Ubuntu 22.04 Root on ZFS.rst b/docs/Getting Started/Ubuntu/Ubuntu 22.04 Root on ZFS.rst
index 74aa9ae..acd6f95 100644
--- a/docs/Getting Started/Ubuntu/Ubuntu 22.04 Root on ZFS.rst	
+++ b/docs/Getting Started/Ubuntu/Ubuntu 22.04 Root on ZFS.rst	
@@ -203,6 +203,11 @@ Step 2: Disk Formatting
 
      wipefs -a $DISK
 
+   For flash-based storage, if the disk was previously used, you may wish to
+   do a full-disk discard (TRIM/UNMAP), which can improve performance::
+
+     blkdiscard -f $DISK
+
    Clear the partition table::
 
      sgdisk --zap-all $DISK