updates to the content

content/install.md

@@ -16,6 +16,16 @@ sections:
         url: "https://archlinux.org/download/"
         style: ghost
 
+  - type: checklist
+    id: requirements
+    kicker: "Requirements"
+    headline: "What you need."
+    items:
+      - "A 64-bit PC (x86_64) that can run Arch Linux, with an internet connection."
+      - "At least **100 GB for `/`**, the root partition. CoreDesktop installs about 50 GB of software, and `update` needs at least 10 GB free."
+      - "A fresh Arch Linux install with GNOME, as below. CoreDesktop changes [system settings](/system/#what-coredesktop-changes), so it's best not to run it on a machine you've already set up the way you like."
+      - "A [Federated Computer Core](https://federated.computer/) is optional. Without one, everything works except what `configure core` sets up: your Core's apps, files, calendars and email, its Tailscale network, and backups."
+
   - type: steps
     kicker: "Part one"
     headline: "Installing Arch."
@@ -66,7 +76,7 @@ sections:
     headline: "While it runs, and after."
     items:
       - title: "Enter your password once"
-        body: "It asks once, at the start. Then be patient: it takes a while."
+        body: "It asks once, at the start. Then it checks the machine: it stops if this isn't Arch, you're root, you can't use sudo or there's no internet, and asks before going on with less than about 60 GB free or `/` not on btrfs. Then be patient: it takes a while."
       - title: "Run configure"
         body: "At the end it offers to run `configure`, which connects your Federated Core, sets up backups and signs you in to the AI agents. If a newer kernel came in, it asks you to reboot first."
       - title: "If something fails, run it again"