diff --git a/README.md b/README.md
index 67cef87..d74855c 100644
--- a/README.md
+++ b/README.md
@@ -223,7 +223,9 @@ For Ubuntu, official recommend mirror lists are here:
-**-setdisk "all"**: If your machine has 2 or more hard drives, and every hard drive want to format during the installation, you can assign -setdisk "all" to enable it, data is invaluable, you should deal with them carefully! This parameter is only suitable for Debian/Kali.
+**-setdisk "all"**: If your machine has 2 or more hard drives, and every hard drive want to format during the installation, you can assign -setdisk "all" to enable it, data is invaluable, you should deal with them carefully! This parameter is only suitable for Debian/Redhat series.
+
+
**-version 32/i386 or 64/amd64 or arm/arm64**: OS bit. Program will automatically detect and redirect the CPU architecture from your machine to new system which would be installed, if you aren't known it well, don't assign it!