diff --git a/README.md b/README.md
index ba53367..28961e5 100644
--- a/README.md
+++ b/README.md
@@ -5,4 +5,13 @@ valDict can be served using the built in react server that comes with this repo,
 
 
 ## Building
+Firstly, you need the "large_dir" option enabled in your filesystem and "dir_index" will also help speed things up, they can be enabled with
+```bash
+
+tune2fs -O large_dir /dev/DEVICE
+tune2fs -O dir_index /dev/DEVICE
+
+#DEVICE can be found with lsblk
+
+```
 building valDict is very easy, just clone the repo and run: `./downloadDict.sh` then run `./cleanbuild.sh` (beware, building takes a LONGGGG time... (has to write 20gb~ worth of files))
\ No newline at end of file