How to remove an OS from dual boot

Tikli

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Feb 11, 2012
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Hello, everyone!
I installed Windows XP 64-bit in Local Disk D while I had Windows XP 32-bit in Local Disk C. I have now seen that xp 64-bit is much faster than the 32-bit one and would like to keep it. Can anyone kindly tell me how to remove windows XP 32-bit( installed in C) from the dual boot so that i can only use Windows XP 64-bit? Thanks in advance!