Making Windows not boot automatically
In Windows 95 and above, Windows automatically starts a GUI when you boot up. But what if you don't want it to? You can make it stay at a DOS-style command prompt until you actually want to run the GUI.
To do this, first open up a DOS prompt. Then, type the following commands. Of course, type them exactly as they're shown here:
cd\ attrib -s -h -r msdos.sys edit msdos.sys
Your MSDOS.SYS file should now be on the screen. Find the line that says this:
BootGUI=1
And change it to this:
BootGUI=0
Then choose "Save" from the File menu, then "Exit". Next, type these DOS commands:
attrib +s +h +r msdos.sys exit
Next time you boot up, you should find yourself at a DOS prompt. Whenever you want to start Windows, just type win.