Here is a method I’m using in the next version of Win32DD (1.2), to retrieve MmPhysicalMemoryBlock regardless of the NT Version. The main problem with KDDEBUGGER_DATA64 structure is the version dependency. Then, we have to rebuild this field by ourselves. To retrieve physical memory runs, I’m using MmGetPhysicalMemoryRanges() undocumented function. This function usage had been documented by Mark Russinovich in 1999, in the Volume 1 Number 5 edition of the Sysinternals Newsletter.
