Disk size shown in msinfo32 and Win32_DirskDrive may be incorrect

現象

The size property in Win32_DiskDrive class may not be correct. Also msinfo32 retrieve the size property to show disk drive size and also it may not be correct as well.

原因

The size of Win32_DiskDrive is calculated based on disk geometry which is come from disk drive and is not accurate.

回避策

Use size property of MSFT_Disk class which is introduced in Windows Server 2012 to see disk size. The size of MSFT_DiskDrive is come from SCSI READ CAPACITY command and it is correct.

関連情報

MSFT_Disk class
https://msdn.microsoft.com/ja-jp/library/windows/desktop/hh830493(v=vs.85).aspx
プロパティ

文書番号:3107749 - 最終更新日: 2016/09/29 - リビジョン: 1

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