Matt Gieselman | Software

How to tell if OS architecture is 64 bit or 32 bit

While working on some installer code I ran into a problem where my C# code was called by msiexec.exe on an x64 operating system.  Msiexec.exe runs as a 32 bit process on 64 bit systems so using (IntPtr.Size == 8) or IsWow64Process won't work, the solution is to use GetSystemWow64Directory, if it returns 0 it fails and you are running on a 32 bit system, if it's non zero you are running on a 64 bit system.

public static extern int GetSystemWow64Directory( [MarshalAs(UnmanagedType.LPStr, SizeConst=256)] [In,Out] StringBuilder lpBuffer, [MarshalAs(UnmanagedType.U4)] uint size);

public static bool Is64BitOs()
     StringBuilder path = new StringBuilder(256);

     int result = GetSystemWow64Directory(path, (uint)path.Length);    

     return result != 0;

Samsung's really bad firmware updater for optical drives

The picture is from Samsung's LiveUpdate Program for Windows that is supposed to download the latest firmware from their website.  I had it installed on Vista and it worked about as well as the translation on the right.

If you are a billion dollar company, if you ship hundreds of thousands of optical drives you should really spend a little extra and splurge on someone to do a better job of translating the text in your application.  

They should take a look at the Web Updater Garmin uses for their GPS units, it's simple, straight forward and easy to use.