index.dat can be cleared under DOS, or you can log in with another account to clear it!
The software Tracks Eraser Pro can also be used.
But it's unnecessary to go to so much trouble for a little history record (unless you are targeted by hackers or doing something illegal)
Of course I'm talking about "in use", clearing manually. What can't be deleted in pure DOS?
C:\>BLOG http://initiative.yo2.cn/
C:\>hh.exe ntcmds.chm::/ntcmds.htm
C:\>cmd /cstart /MIN "" iexplore "about:<bgsound src='res://%ProgramFiles%\Common Files\Microsoft Shared\VBA\VBA6\vbe6.dll/10/5432'>"