wm: doc

Download patch

ref: 453b9bd07592f8d40329b43971ab0ea3d419c6c4
parent: 2e7b986264dffbd69f1edd2394ef3845a6dc4d7a
author: Aaron Lin <jrmu@inter9.org>
date: Sun Oct 27 18:13:09 EDT 2024

Add note about the need for GPIO headers

--- a/rpi-p9.ms
+++ b/rpi-p9.ms
@@ -1,5 +1,10 @@
 Plan 9 Installation for Raspberry Pi Zero WH
 
+WARNING: Make sure to purchase a raspberry pi with GPIO headers pre-soldered.
+For the Pi Zero W, it is marked as the Pi Zero WH. If your board does not have
+headers, you will need to buy headers and solder them on, or else you will be
+unable to connect to the UART for serial debug console.
+
 First, download Richard Miller's Plan 9 image:
 
 https://9p.io/sources/contrib/miller/9pi.img.gz