the line doesn't do anything that can be slowing down the bootup. something else has changed and whatever it is happens to leave whatever was last on the screen while it is doing its work.
what do you mean by "deleted" Diskkeeper. you should never delete any program from Windows. you always uninstall. deleting can break many things and may leave things littered around that cause problems later even if they aren't causing problems now.
A friend of mine pieced together a PC for me and installed the Executive Software Diskeeper program. When I boot my system, after the "starting Windows 98" line, I get the following DOS command. c:\>set path=c:\windows;c\windows\command;"c\program files\executive software\diskeeper\". I don't know what this is and my friend doesn't know what it is either. It delays the start up of windows by about 5 minutes and is very annoying. I tried deleting Executive Software Diskeeper and it still happens. Any suggestions on how to make this stop so my system will get on with starting windows?? Thanks for any help anyone can give me.