How are external USB drives processed? TFM wanted

[ed.temp.01 at gmail.com]

Hi,

I have an external USB drive with a number of partitions on it. When I
switch it on then a number of mount points appear under /media of the
form /media/label where label is the partition label.

I'd like to control this process, i.e. decide which partitions are
mounted, which are mounted readonly and which are not mounted. I'd
also like to change the mount point names to be more user friendly
e.g. 'backup'

I am guessing that udev is used to recognise the new devices and
create the /dev entries. What decides to create the mount points and
to mount the partitions?

Ed