Upgrade MySQL failed

Hi,

I try to update OpManager 7205 to Version 8 (Windows2003).

First Step is to upgrade MySQL Database. I get an error about low diskspace:

C:\Program Files\AdventNet\ME\OpManager\bin>echo off
buildNo in PreInvo 7205
------getFreeDiskSpace : path : C:\Program Files\AdventNet\ME\OpManager
------getFreeDiskSpace : osname : Windows 2003
========Disk Free Space(MB) : 0.0
null
Mysql Datadir is C:\Program Files\AdventNet\ME\OpManager\mysql\data\OpManagerDB
Mysql datadir is C:\Program Files\AdventNet\ME\OpManager\mysql\data\OpManagerDB
. folder size(MB) : 3200.5

There are 9 GB free disk space left on drive c. Is it not enough?

Thanks for help,

Regards,

Henrik