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We've never had data loss using Partition Wizard boot CD here in tens of thousands of these operations we've helped with, often much more complicated than this one. But I would use the boot disk which is safest. Burn ISO to CD using Windows Image Burner. Partition Wizard Resize Partition - Video Help.
All others except Disk Mgmt can fail.
PW also has an amazing Extend feature which can borrow space from any other partition even it its not adjacent: How to extend partition easily with Partition Wizard - video help.