32 bit Vista Upgrade to 64 bit Win7?

好似話Vista 上Win7好容易,就咁上就得唔使重新裝過晒d applications, 不過如果由 32bit Vista上 64bit Win7,係唔係真係咁容易呢?

32-bit 唔可以就咁上64-bit﹐一定要clean install﹐即係要裝過晒所以程式。

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