Given a drive letter, how do I get the OSImage InstallTo Partition ID and Disk ID without using the registry?
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Given a drive letter, how do I get the OSImage InstallTo Partition ID and Disk ID without using the registry?
The
WMIclassWin32_DiskPartitionis what I need. Now to figure out how to useWMIto get this information from a drive letter.Win32_LogicalDiskis also useful, MSDN Example, and this stackoverflow answer.Update: Hmm, this doesn’t work! Not in the Windows Installer anyway (WMI is missing from Windows PE!!) so I am using the other answer
QueryDosDevice(e.g.\\.\PhysicalDisk1\Partition0) and hacking it together. This sucks Microsoft, accept a damn path in your installer.Answer:
IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTSworks to get theDisk ID. And DeviceIoControlIOCTL_DISK_GET_PARTITION_INFO_EX(thanks TLama) gets me thePartition ID.