Update CAR INSTALL.md

diff --git a/CAR INSTALL.md b/CAR INSTALL.md
index b24c86c7088550a3f38ce54f68fac040d3581ea8..93c4da05ab89dc607745b2de62427d41b002fb07 100644 (file)
--- a/CAR INSTALL.md
+++ b/CAR INSTALL.md
@@ -193,9 +193,9 @@ denyinterfaces wlan0
 ```
 From this point on, at least on the Raspberry Pi, if you reboot the machine, it will not reconnect to your network – instead, it will act as the WiFi base station you have configured with `hostapd` and `isc-dhcp-server`.
 
-### Optimise startup time
+### Optimise startup time -- Raspberry Pi
 
-There are quite a few services that are not necessary for this setup. Disabling them can increase startup time. Running these commands disables them:
+This is applicable to a Raspberry Pi only. Some of it may be applicable to other systems, but it has not been tested on them. There are quite a few services that are not necessary for this setup. Disabling them can increase startup time. Running these commands disables them:
 
 ````
 sudo systemctl disable systemd-timesyncd.service
@@ -207,7 +207,7 @@ sudo systemctl disable dphys-swapfile.service
 sudo systemctl disable networking.service
 ````
 
-### Read-only mode
+### Read-only mode -- Raspberry Pi
 
 Run `sudo raspi-config` and then choose `Performance Options` > `Overlay Filesystem` and choose to enable the overlay filesystem, and to set the boot partition to be write-protected.