diff --git a/docs/install.md b/docs/install.md
index 39fdd89..903ac0f 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -118,15 +118,7 @@ You can also build Nix from source by following the instructions at https://nixo
 
 	This will now create a nix-bitcoin node on the target machine.
 
-6. Resize the virtualbox disk
-    
-	```
-	./contrib/vbox-resize-disk1.sh
-	```
-
-	NixOps provides a virtualbox disk thats 50gb in size, but we need more than that to house the Bitcoin blockchain. By default, this script will resize the disk to 350gb. Run it with `-h` to see options. Make sure to run this from within your nix-shell.
-
-7. Nixops automatically creates an ssh key for use with `nixops ssh`. Access `bitcoin-node` through ssh in nix-shell with
+6. Nixops automatically creates an ssh key for use with `nixops ssh`. Access `bitcoin-node` through ssh in nix-shell with
 
 	```
 	nixops ssh operator@bitcoin-node
@@ -134,6 +126,10 @@ You can also build Nix from source by following the instructions at https://nixo
 
 See [usage.md](usage.md) for usage instructions, such as how to update.
 
+To resize the VM disk image, you can use this helper script from within nix-shell:
+```
+./contrib/vbox-resize-disk1.sh --help
+```
 ----
 
 Tutorial: install and configure NixOS for nix-bitcoin on VirtualBox (macOS host)
diff --git a/network/network-vbox.nix b/network/network-vbox.nix
index 24aac38..2f75481 100644
--- a/network/network-vbox.nix
+++ b/network/network-vbox.nix
@@ -3,8 +3,11 @@
     { config, pkgs, ... }:
     {
       deployment.targetEnv = "virtualbox";
-      deployment.virtualbox.memorySize = 4096; # megabytes
-      deployment.virtualbox.vcpu = 4; # number of cpus
-      deployment.virtualbox.headless = true;
+      deployment.virtualbox = {
+        memorySize = 4096; # megabytes
+        vcpu = 4; # number of cpus
+        disks.disk1.size = 358400; # 350 GiB
+        headless = true;
+      };
     };
 }