I am following instruction from Microsoft documnet 823382
(MSIexec.exe linked to missing MSI.DLL file). In the
instructions it says to create a start up disk and restart
under minimum start up. Then it asks me to rename a
couple of files in the C:\windows\system subdirectory. My
problem is the start up disk brings me to the A:\ drive
and when I try to go to the C:\ drive it says it is in
valid. So I can rename the files and continue.

Any suggestions?