How do I make a command in a batch file not prompt to front?

I have a bat file contains the following commands.

start /WAIT /d "C:\Program Files\7-Zip" 7z.exe u -ms=off "D:\7zbackup\android.7z" "C:\xampp\htdocs\android"
start /WAIT /d "C:\Program Files\7-Zip" 7z.exe u -ms=off "D:\7zbackup\aspnet.7z" "C:\xampp\htdocs\aspnet"
start /WAIT /d "C:\Program Files\7-Zip" 7z.exe u -ms=off "D:\7zbackup\bitbucket.7z" "C:\xampp\htdocs\bitbucket"
start /WAIT /d "C:\Program Files\7-Zip" 7z.exe u -ms=off "D:\7zbackup\bitbucket_sourcetree.7z" "C:\xampp\htdocs\bitbucket_sourcetree"

It will prompt a cmd window to the front for each line of the command. How do I make it not prompt and run minimized or run in the background?

Solution 1:

Use start with parameter '/B':

start /B /WAIT /d "C:\Program Files\7-Zip" 7z.exe u -ms=off "D:\7zbackup\android.7z" "C:\xampp\htdocs\android"

/b: Starts an application without opening a new command prompt window. Ctrl + C handling is ignored unless the application enables Ctrl + C processing. Use Ctrl + Break to interrupt the application. (Start (TechNet).)

Solution 2:

It is your use of start which causes the new window to appear.

7z is 7-Zip's command-line program, so it can be called directly:

"C:\Program Files\7-Zip\7z.exe" u ...

This way everything stays within the original window.