Evesham will invalidate your warranty. If its not broke then dont "as the expression goes" Evensham sort of know what there doing and if it should be partitioned then it will be by them. They will not expect you to do this.
I wouldn't have thought that partioning the harddrive would invoke the warrenty.
1. Will XP be preinstalled on the HDD by Evesham? If so then leave well alone if your not completely sure what you are doing as you could wipe XP and the recovery files.
2. If the HDD is empty and you are installing XP yourself from a CD then partioning the drive to have one partion for th op system and another for your data is well worth while as this could save your data if your op system goes t*ts up and you have to format and reinstall to the "C" drive.
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