update readme a bit

README.md

@@ -62,40 +62,46 @@ Some additional notes about Titan are as follows:
     * Titan is essentially hardcoded to use a 'F (Partition 6) Takes All'-esque partitioning scheme
     * Titan could be extended to support additional partitions, but it seems unnecessary
  * **Clusters**
-    * Titan allows increased cluster sizes of 128kb, 256kb and 512kb
+    * Titan allows increased cluster sizes of 128kb, 256kb, 512kb, 1mb
       * **It is strongly recommended to format large disks (2TB+) with 1024 sectors per cluster (512kb)**
-      * Matt's [FATX](https://github.com/mborgerson/fatx) is the only tool that can currently format disks with larger clusters 
+      * Matt's [FATX](https://github.com/mborgerson/fatx) is the only tool that can currently format disks with larger clusters
+    * Due to how the kernel caches file information in-memory, partitions are limited to 2^24 clusters
+      * 128kb clusters - up to 2TB partition size
+      * 256kb clusters - up to 4TB partition size
+      * 512kb clusters - up to 8TB partition size
+      * 1mb clusters - up to 16TB partition size
     * Increased cluster sizes dramatically increases the speed of mounting FATX volumes (faster bootup)
     * Increased cluster sizes will ensure more linear reads on the disk (faster file reads, game loading, etc.)
     * Increased cluster sizes allows for more items in the root disk directory (8192 items at 512kb clusters)
     * If you're using Titan, you can afford the luxury of bigger clusters so stop complaining about wasted space
-    * Increased cluster sizes were never the issue for limiting drive/partition sizes, this is FUD
-      * 64kb clusters should work on the Titan partition but bootup/mounting WILL be slow for large disks
  * **UDMA**
     * Titan can change the [UDMA](https://en.wikipedia.org/wiki/UDMA) transfer mode used by the kernel with `--udma N`
        * Increasing the UDMA mode has been profiled to improve some game load times in excess of 20%
-       * Increasing the UDMA mode will require an 80pin IDE cable
+         * A full benchmark with SSD + StarTech shows disk IO is 70-100% faster across the board
+       * Increasing the UDMA mode will require an 80 wire IDE cable
     * The retail Xbox uses UDMA 2 (33mb/s) by default (as do many/all (?) modified BIOS')
     * The maximum supported UDMA mode by the Xbox southbridge is UDMA 5 (100mb/s HDD <--> CPU)
       * **UDMA 5 DOES NOT WORK WITH ALL IDE TO SATA ADAPTERS**
-      * UDMA 5 has been confirmed working with Startech adapters but has not been properly benchmarked
+      * UDMA 5 is confirmed to be working and stable with StarTech adapters
       * UDMA 5 is unstable on RXD-629A7-7 based adapters, but UDMA 4 seems okay
       * WLXKG-863B are the 'worst' adapters I have experienced working on Titan and are largely untested
  * **Games**
     * A random assortment of games have been tested to ensure some baseline on system stability
       * I don't expect major issues here, but more testing should be obviously be done 
  * **Dashboards**
     * XBMC seems to work fine
+      * DVD drive status can be flakey in XBMC under higher UDMA modes (SMBus issues? most likely)
     * EvoX seems to work fine
       * EvoX displays the incorrect disk size because it [performs](https://github.com/gaasedelen/titan/blob/main/screenshots/evox_bug.png) a modulus of 'available gigabytes' by 1000
-      * This does not mean that you formatted incorrectly, or that the HDD is corrupt
+        * This does not mean that you formatted incorrectly, or that the HDD is corrupt
       * FTP seems okay?
     * Dashboard-based FTPs are probably much safer than BIOS-based FTP (eg. XeniumOS)
     * Consider all other dashboards as untested
   * **Other Homebrew Notes**
     * DVD2Xbox works fine
     * FTP via XeniumOS is probably risky. I would only use it to transfer files onto RETAIL partitions (C or E)
     * Anything booting into a BFM BIOS (PBL, Hexen?) is totally unsupported for accessing the Titan partition (F)
+    * It should be possible to tweak M8+Titan with a modified version of EVTool (will release more info soon)
     * Consider all other homebrew as untested
   * **Patches** 
     * Titan is only supported on the M8+ kernel. M8+ is a modified version of the final retail kernel (5838)