IMO fewer things to go wrong if you use a livecd. Modifying the partition table while I'm booted from the hard drive makes me nervous.
I could see using a standard Windows program like that if I've pulled the to-be-operated-on drive from another machine and have it plugged into the computer I'm working on as a secondary drive, but that'd still be more work than creating a livecd or liveusb.
Think for yourself, schmuck!
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