diff --git a/README.md b/README.md
index ea6b488..169d3b5 100644
--- a/README.md
+++ b/README.md
@@ -109,6 +109,39 @@ ### Options when running the script <a name="options"></a>
                         recent model IronWolf and IronWolf Pro drives.
   -h, --help            Show this help message
   -v, --version         Show the script version
+
+  -s, --showedits       Show edits made to <model>_host db and db.new file(s)
+  -n, --noupdate        Prevent DSM updating the compatible drive databases
+  -r, --ram             Disable memory compatibility checking (DSM 7.x only)
+                        and sets max memory to the amount of installed memory
+  -f, --force           Force DSM to not check drive compatibility
+                        Do not use this option unless absolutely needed
+  -i, --incompatible    Change incompatible drives to supported
+                        Do not use this option unless absolutely needed
+  -w, --wdda            Disable WD Device Analytics to prevent DSM showing
+                        a false warning for WD drives that are 3 years old
+                          DSM 7.2.1 and later already has WDDA disabled
+  -p, --pcie            Enable creating volumes on M2 in unknown PCIe adaptor
+  -e, --email           Disable colored text in output scheduler emails
+  -S, --ssd=DRIVE       Enable write_mostly on internal HDDs so DSM primarily 
+                        reads from internal SSDs or your specified drives
+                          -S automatically sets internal SSDs as DSM preferred
+                          --ssd=DRIVE requires the fast drive(s) as argument,
+                          or restore as the argument to reset drives to default
+                          --ssd=sata1 or --ssd=sata1,sata2 or --ssd=sda etc
+                          --ssd=restore
+      --restore         Undo all changes made by the script (except -S --ssd)
+                        To restore all changes including write_mostly use
+                          --restore --ssd=restore
+      --autoupdate=AGE  Auto update script (useful when script is scheduled)
+                          AGE is how many days old a release must be before
+                          auto-updating. AGE must be a number: 0 or greater
+  -I, --ihm             Update IronWolf Health Management to 2.5.1 to support
+                        recent model IronWolf and IronWolf Pro drives.
+                        For NAS with x86_64 CPUs only.
+                        Installs IHM on '22 series and newer models (untested)
+  -h, --help            Show this help message
+  -v, --version         Show the script version
 ```
 
 **Notes:**