Reinstall OS ? Depends on how you set it up and install the new HDD.
More info and detail would let us know what you have and make appropriate recommendations.
I have Dell computer with O/S windows xp. My hard drive is almost full (90%).
Is there any possibilty of adding another hard drive?
Can anyone advice me how to install new hard drive.
Upon installing new hard drive do I have to install windows O/S again?

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