Reading physical drive

[Afrow UK]

Does it work on XP but not on 7? Or does it work on neither?

This is the my code (ReadFile fails with 87 - invalid parameter).

code:
Section Main

  StrCpy $3 "\\.\PhysicalDrive0"

  System::Call "kernel32::CreateFile(t r3, i ${GENERIC_READ}, i 0, i 0, i ${OPEN_EXISTING}, i 0, i 0) i .r2"

  ${If} $2 != ${INVALID_HANDLE_VALUE}

     System::Call "kernel32::ReadFile(i r2, t .r0, i 32, i .r4, i 0) ?e"

     Pop $5

     DetailPrint "Return code: $5, Return value: $0"

     System::Call "kernel32::CloseHandle(i r2) i.r3"

  ${Else}

     DetailPrint "Error: CreateFile failed for \\?\PhysicalDrive0"

  ${EndIf}

SectionEnd

Stu