2014年11月20日 — Your command is quoted, so start interprets it as the title, and doesn't know what /s is. So, add a dummy title, like this: START /WAIT ...
2012年11月6日 — START will create a new cmd.exe for the called batch and without /b it will open a new window. As it's a new context, variables can't be shared.
2011年3月9日 — you can always do cmd /C start /wait install. – graywolf. Aug 18, 2016 ... Start /wait in batch file stops waiting after ~5 minutes · 0 · Run Log ...
In a batch script, a START command without /wait will run the program and just continue, so a script containing nothing but a START command will close the CMD ...