I get error 'Setup was unable to copy the following file CDROM.SYS', why?

A. This problem can be caused if you are loading the ATAPI real mode CD-ROM driver in the config.sys.

1. Edit the config.sys file from the command prompt (cmd.exe)
   C:\> edit c:\config.sys
2. Find the Device= line that contains the ATAPI Real Mode CD-ROM driver
3. Edit the line so the /D: switch does not contain the word value "cdrom", for example
   Device=<driver> /d:cdrom
   to
   Device=<driver> /d:testa
4. Save the file