Quoting from the page:
http://gnuradio.org/trac/wiki/MingwInstallMain
"You can avoid some problems by intalling an updated version of bash.
Download bash-3.1-MSYS-1.0.11-1.tar.bz2 from the “MSYS Base
System/Technology Preview: MSYS-1.0.11” section of the MinGW download
areahttp://sourceforge.net/project/showfiles.php?group_id=2435
to C:/msys/1.0. From a Windows command prompt window, execute the
commands
C:/msys/1.0/bin/bzip2 -d bash-3.1-MSYS-1.0.11-1.tar.bz2
C:/msys/1.0/bin/tar -xf bash-3.1-MSYS-1.0.11-1.tar"
When i enter these commands in dos prompt i get the following error
The windows cannot find the path specified.
I have the file bash-3.1-MSYS-1.0.11-1.tar.bz2 in my C:/msys/1.0 folder.