Added some information

docs/main/prerequisites.md

@@ -1,7 +1,7 @@
 ---
 title: Prerequisites
 description: Operating system and network requirements
-last_updated: January 27 2020
+last_updated: May 25 2020
 ---
 
 ### Hardware
@@ -14,7 +14,11 @@ Pi-hole is very lightweight and does not require much processing power
 Despite the name, you are not limited to running Pi-hole on a Raspberry Pi.
 Any hardware that runs one of the supported operating systems will do!
 
-### Supported Operating Systems
+### Software
+
+Pi-hole will only work on distributions utilizing [systemd](https://systemd.io/) or [sysvinit](https://www.nongnu.org/sysvinit/)! Distributions like MX Linux, Devuan, Void Linux and others will not work.
+
+#### Supported Operating Systems
 
 The following operating systems are **officially** supported:
 
@@ -26,6 +30,13 @@ The following operating systems are **officially** supported:
 | Fedora       | 31 / 32          | ARM / x86_64        |
 | CentOS       | 7 / 8            | x86_64              |
 
+!!! info
+    Pi-hole will run on most Debian-based distributions and is the preferred platform.
+
+!!! info
+    For Fedora-based distributions, it is advisable to set [SELinux to `disabled` or `permissive`](https://wiki.centos.org/HowTos/SELinux#SELinux_Modes).
+    Pi-hole can otherwise be whitelisted if the `enforcing` mode is kept.
+
 ### IP Addressing
 
 Pi-hole needs a static IP address to properly function (a DHCP reservation is just fine). Users may run into issues because **we currently install `dhcpcd5`, which may conflict with other running network managers** such as `dhclient`, `dhcpcd`, `networkmanager`, and `systemd-networkd`.