User almehdi made a very useful application called n9tweak. In the latest version 0.2-1 he added startup script for the PreDriv so even after the restart the phone volume would be still set to 100%. No need to access the command line and change it manually.

http://forum.meego.com/showthread.php?t=4991

N9tweak 0.2-1 now available at http://goo.gl/4JmjY

Installation 0.2-1:
1)Either install it through the browser. http://goo.gl/4JmjY
You need to have "allow other sources" set in settings.

2)Or do it with wget from terminal.
1. devel-su
(passwd: rootme)
2. wget goo.gl/4JmjY
3. dpkg -i n9tweak_0.2-1_all.deb

Changelog:

0.2-1
* Change GPS provider
* Change PowerKey behaviour
* Added PreDriv at startup
* Added Screenlapse (hidden)

New in v0.2-0:
* Added bounce to lock-screen
* Added volume boost
* Added startup adhoc
* Added german hw-keys
* possibilty to revert hw-keys
* added /usr/bin/n9tweak
* A bunch of bug fixes

New in v0.1-4 are..

* Package as a deb (Easy install/uninstall)
* App icon in the launcher
* All options can be reset
* Options who don't need root are done by user
* Close to none restarts are necessary
* Small size (3.9kb)