change default major number to 63

1 files changed, 11 insertions, 6 deletions

diff --git a/README.md b/README.md
index 29c3e28..8ee2b25 100644
--- a/README.md
+++ b/README.md
@@ -114,7 +114,7 @@ decide which drive letters you prefer for the partitions on your pendrive.
 For that, go to Device Manager, Disk Drives, and select the CH375 USB Disk
 as follows:
 
-![Assigning Disk Drive Leters](https://depot.javispedro.com/dos/chu/img/config1.png)
+![Assigning Disk Drive Letters](https://depot.javispedro.com/dos/chu/img/config1.png)
 
 Partitions will be assigned to disk letters in order.
 
@@ -180,17 +180,22 @@ You can then use/mount the `/dev/chuda1`, `/dev/chuda2` devices as usual.
 
 ## Usage
 
+Load in the usual way, or put into `/etc/modules`. E.g.,
+
+````
+modprobe chudisk io=0x260
+````
+
 The driver exposes the following parameters:
 
 * `io` the io address for your CH375, defaults to 0x260. 
-* `major` allows overriding the device's major number, in the rare case you
-have a conflict. If you do this, also update `mkdev.sh`.
+* `major` allows overriding the device's major number, in case you
+have a conflict with the default (63). If you do this, also update `mkdev.sh`.
 * `force` will load the driver even if we can't find a CH375 at the specified
 address.
 * `softblk` allows setting the "block size" used for transfers.
-Linux defaults to 1024. Higher values provide higher speed at the cost
-of latency. Must be power of two.
-
+Linux defaults to 1024. Higher values provide higher throughput at the cost
+of latency. Must be power of two, max is 4K.
 
 # Future work