The Partition Manager within Windows will only do it if you delete the partitions first. It will also only work if the partitions are next to each other to that once the partitions are deleted they will become unallocated space and all merge into 1 big partition.
There are free and open source alternatives. A Bing Search can provide you with some answers.
Regards,
~Alex T.~
~Windows Desktop Experience MVP~- 回答としてマークSean Zhu -MSFT, モデレータ2009年7月29日 9:26
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