Calc exe is just a launcher for the real calculator. If the app is installed it launches it, if the w32 program is installed it opens the latter.
I guess it would be with dism and all that crap. There's so many examples of it being invoked on this forum, it probably wouldn't be hard to find how to do it. That said, to strictly answer your first question, you can take advantage of the fact that the Run dialog looks in the App Paths Registry key to resolve paths to applications first (which is why, say, firefox can be started from there just by typing its name even though the directory Firefox resides in isn't in the PATH). Import this and running calc from Run should start the traditional calculator (note: since I'm running LTSB, I don't even have the Metro calculator in the first place but testing this by getting calc to start cmd worked for me), assuming there's a link to it at C:\Windows\System32\win32calc.exe, like on a stock LTSB system: Code: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\calc.exe] @=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\ 00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,77,00,69,00,\ 6e,00,33,00,32,00,63,00,61,00,6c,00,63,00,2e,00,65,00,78,00,65,00,00,00
I finally got round to looking at this. Looked a bit confusing at first but after reading it three or four times I managed to figure it out. So I mounted the en-gb Win 10 Ent ltsb and made a package list and found the two win32calc packages. Extracted my own packages and made them into .cab files using WinRAR. I am will test adding these packages to my Win 10 pro en-gb image. Edit Just looking at the "how to" again. I noticed there are "your title".cab after the .mum so if I'd have put that it would have made .cab files anyway.
Obviously you can't using dism, because the different version. Just unpack the cab and copy by hand the files
That's because the Windows 10 Pro Insider Preview Build 10576 version is higher than the Windows 10 Enterprise 2015 LTSB. When the TH2 RTM gets released if there is a version gap b/w the Windows 10 Enterprise 2015 LTSB & the Windows 10 TH2, then we need to use the manual method to install Windows win32calc.
You need to use the DISM command to Install those packages DISM /Online /Add-Package /PackagePath:<win32calc.cab> DISM /Online /Add-Package /PackagePath:<win32calc_lang.cab> change the <filename> with the corresponding filename in the archive file.
Installing Win32 Calculator on Windows 10 TH2 : For 32-bit Systems - Extract calc.exe from the main package to <\Windows\System32> - Extract calc.exe.mui from the required language package to <\Windows\System32\<languagefolder>> E.g <\Windows\System32\en-US> - Extract calc.lnk from the main package to <\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories> For 64-bit Systems - Extract 64-bit calc.exe from the main package to <\Windows\System32> - Extract 64-bit calc.exe.mui from the required language package to <\Windows\System32\<languagefolder>> E.g <\Windows\System32\en-US> - Extract 32-bit calc.exe from the main package to <\Windows\SysWOW64> - Extract 32-bit calc.exe.mui from the required language package to <\Windows\SysWOW64\<languagefolder>> E.g <\Windows\SysWOW64\en-US> - Extract calc.lnk from the main package to <\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories> Now you can Run Calculator from Start Menu.