Alignment requirements: converting basic disk to dynamic disk in order to set up software RAID?

Posted by 0xC0000022L on Super User See other posts from Super User or by 0xC0000022L
Published on 2012-09-26T15:06:44Z Indexed on 2012/09/26 15:40 UTC
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windows-7

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partitioning

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dynamic-disk

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basic-disk

On Windows 7 x64 Professional I am struggling to convert a basic disk to a dynamic one. Under Disk Management in the MMC the conversion is supposed to be initiated automatically, but it doesn't.

My guess: because of using third-party partitioning tools there isn't enough space in front and after the partitions (system-reserved/boot + system volume) to store the required meta-data. When demoting a dynamic disk to a basic disk manually, I noticed that some space seems to be required before and after the partitions.

What are the exact alignment requirements that allow the on-board tools in Windows to do the conversion?

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