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<< I guess I'll just use fdisk. What would be the best string to completely reformat the HDD? I just want it to be a single ntfs partition for file storage. >>
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Hang on a sec, this disk doesn't even have an OS on it and you have XP on another Hdrive, Yes?
If yes then boot to windows, Right click my computer/manage/disk management.
From here you can delete/create partitions and format to fat or NTSF select cluster size etc. You just cant do much on the active partition, as the second disk/partition isn't active go for it. Disk utilities arn't needed.