[9front] [PATCH] Doc contribution: CWFS with WORM on a separate drive

[Lorenzo Bivens <izaki@belaska.us>]

Hi!

I have put together a few notes on how to setup cwfs with the cache and worm on separate disks. 
I think it could be a reasonable addition to the cwfs page of the docs page.

Patch inline below. Feedback is quite welcomed!

--- /tmp/docs.9front.org/.git/fs/object/a35de70a4d9d04e8af37ec5fd729cf6d9bf98230/tree/cwfs.md
+++ cwfs.md
@@ -87,3 +87,43 @@
 to confirm. `wsize * 16000` is the size of your WORM.
 
 No refunds
+
+CWFS with WORM on a separate drive
+----------------------------------
+
+### What you do is what you get
+These instructions assume you want to set up a CWFS on two drives one containing
+the cache filesystem, and the other containing the WORM
+
+This process has been tested on MBR installations, but should be extrapolable 
+to GPT as well with minor changes. (please report results)
+
+Note that the instructions won't work unless you have read them first
+
+### Initialize the disks
+For this examble sd00 will be our cache drive, sd01 will be our WORM
+
+Assuming your drives are new, for a MBR partitioning scheme, you want to first 
+create a MBR partition table. (see end note if using GPT)
+
+	disk/mbr -a /386/mbr /dev/sd00/data 
+	disk/mbr -a /386/mbr /dev/sd01/data
+
+You need to add a plan9 partition to both disks, otherwise the installer will not see them
+
+	disk/fdisk -baw /dev/sd00/data 
+	disk/fdisk -baw /dev/sd01/data
+
+Now it is time to subdivide the plan9 partitions on both disks. We will then subpartition 
+the cache, and worm disks
+
+	disk/prep -bw -a^(9fat nvram other fscache) /dev/sd00/plan9
+	disk/prep -bw -a fsworm /dev/sd01/plan9
+
+The steps to make this layout work on GPT partitioned drives should be similar, 
+skipping the mbr initialization, and using disk/edisk instead of fdisk.
+
+### Finally
+Start your installation as usual: select cwfs64x as your filesystem, 
+skip partdisk and prepdisk. When going through the mountfs step, 
+make sure to point to the right partitions on each function.