Update README.md

README.md

@@ -15,6 +15,8 @@ Just a bare bone automated [Arch](https://wiki.archlinux.org/index.php/Arch_Linu
 
 Whenever this live-cd boots, from here on now - it'll run `archinstall.py`.
 
+> CAUTION: If no parameters are given, it will devour the first disk in your system (/dev/sda, /dev/nvme0n1p2 etc).
+
 # Manually run it on a booted Live CD
 
     # git clone https://github.com/Torxed/archinstall.git
@@ -22,4 +24,25 @@ Whenever this live-cd boots, from here on now - it'll run `archinstall.py`.
 
 # Some parameters you can give it
 
-    WIP!
+    --drive=</dev/sdX>
+      Which drive to install arch on, if absent, the first disk under /dev/ is used
+    
+    --size=100% (Default)
+      Sets the size of the root filesystem (btrfs)
+    
+    --start=513MiB (Default)
+      Sets the starting location of the root partition
+      (TODO: /boot will take up space from 1MiB - <start>, make sure boot is no larger than 513MiB)
+    
+    --pwfile=/tmp/diskpw (Default)
+      Which file to use as the disk encryption password
+    
+    --hostname=Arcinstall (Default)
+      Sets the hostname of the box
+    
+    --country=SE (Default)
+      Default mirror allocation for fetching packages.
+    
+    --packages='' (Default)
+      Which additional packages to install, defaults to none.
+      (Space separated as it's passed unchanged to `pacstrap`