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поставлю на машину с ХР всё равно могут быть проблемы, верно? »

Я лучше дам слово первоисточнику, Information about Microsoft support policy for large-sector drives in Windows (Last Review: October 12, 2011):

Windows Server 2003 and Windows XP Any large-sector disks, such as 4K native, 512e, or any non-512 native disks, are not supported by Microsoft on any Windows XP-based version of the operating system including but not limited to Windows Home Server 1.0, Windows Server 2003, Windows Server 2003 R2, Windows XP 64-bit Edition, Windows XP Embedded, Windows Small Business Server 2003, and Windows Small Business Server 2003 R2. Please contact your application and hardware vendor for their support policies for these types of drives in these environments.