Fixes for Fedora; support Rocky Linux Live ISO

Signed-off-by: Maurice Zhou <jasper@apvc.uk>

docs/Getting Started/Fedora/Root on ZFS/1-preparation.rst

@@ -43,7 +43,7 @@ Preparation
 
 #. Install helper script and partition tool::
 
-    dnf install -y arch-install-scripts gdisk
+    dnf install -y arch-install-scripts gdisk dosfstools
 
 #. Target Fedora version::
 
@@ -94,6 +94,24 @@ Preparation
 
     INST_VDEV=
 
+   This will create a single vdev with the topology of your choice.
+   It is also possible to manually create a pool with multiple vdevs, such as::
+
+    zpool create --options \
+          poolName \
+          mirror sda sdb \
+          raidz2 sdc ... \
+          raidz3 sde ... \
+          spare  sdf ...
+
+   Notice the cost of parity when using RAID-Z. See
+   `here <https://www.delphix.com/blog/delphix-engineering/zfs-raidz-stripe-width-or-how-i-learned-stop-worrying-and-love-raidz>`__
+   and `here <https://docs.google.com/spreadsheets/d/1tf4qx1aMJp8Lo_R6gpT689wTjHv6CGVElrPqTA0w_ZY/>`__.
+
+   Refer to `zpoolconcepts <https://openzfs.github.io/openzfs-docs/man/7/zpoolconcepts.7.html>`__
+   and `zpool-create <https://openzfs.github.io/openzfs-docs/man/8/zpool-create.8.html>`__
+   man pages for details.
+
 #. Set partition size:
 
    Set ESP size::