Readme Tweak (#3929)

* pr1

* pr2

* pr3

* pr3-2

* pr3-3

* pr3-4

* pr4

* Revert hardware.py to original state on snapshots branch

* readme

* Revert installer.py to original state on readme branch

* match base branch

* Revert genfstab and pacstrap command changes

* readme tweaks2

Author: h8d13

README.md

@@ -14,8 +14,13 @@ The installer also doubles as a python library to install Arch Linux and manage
 * archinstall [documentation](https://archinstall.archlinux.page/)
 
 # Installation & Usage
+> [!TIP]
+> In the ISO you are root by default. Use sudo if running from an existing system.
+
 ```shell
-sudo pacman -S archinstall
+    # pacman-key --init
+    # pacman -Sy archinstall
+    # archinstall
 ```
 
 Alternative ways to install are `git clone` the repository or `pip install --upgrade archinstall`.