Chapter 1 (f) - Setup detects that your computer uses DR-DOS

If you have DR-DOS installed on your computer, you should take the following precautions before
restarting Setup:

·	If you have any security features, including password protected partitions, you should disable 
 	them. For more information, see "Setup displays the 'Your computer uses password protection' 
	screen" in the chapter "Diagnosing and Solving Problems" in the MS-DOS 6 User's Guide.

  

Warning   MS-DOS 6 Upgrade cannot detect DR-DOS files or directories that are password protected. 
Since Setup cannot see these directories, it fails by returning you to the C prompt.

·	If you have Delwatch installed on your computer, carry out the procedure “Setup displays the
	 ‘Your computer is using an incompatible delete-protection program’ screen” in the chapter 
	"Diagnosing and Solving Problems" in the MS-DOS 6 User's Guide.
·	If your CONFIG.SYS or AUTOEXEC.BAT files use any conditional commands, such as the ? or 
	goto commands, you should remove them and adjust the order of commands in your startup 
	files accordingly.
·	If your CONFIG.SYS uses the chain command, you should remove it and adjust the order of 
	commands in this file accordingly.
·	If your computer uses disk-compression but drive C is not compressed, run Setup as described 
	in the section “Getting Started” in the MS-DOS 6 User's Guide. When Setup displays the 
	message “Your CONFIG.SYS file contains commands that are not valid MS-DOS commands,” 
	choose the “Modify original files” option.
·	If drive C is compressed, carry out the following procedure.

	To install MS-DOS 6 if drive C is compressed

 1.	Determine which drive is your original uncompressed drive. For more information, see your 
	DR-DOS documentation.
 2.	Make backup copies of your CONFIG.SYS and AUTOEXEC.BAT files on your compressed 
	drive, and your DCONFIG.SYS file on your uncompressed drive.
 3.	Combine the two configuration files.
	For example, if drive D is your uncompressed drive, type the following at the command prompt:
  
copy d:\dconfig.sys+c:\config.sys d:\config.sys
  
 4.	Copy the combined CONFIG.SYS file to drive C.
	For example, if drive D is your uncompressed drive, type the following at the command prompt:
  
copy d:\config.sys c:\config.sys
  
 5.	Copy your AUTOEXEC.BAT to your uncompressed drive.
	For example, if drive D is your uncompressed drive, type the following at the command prompt:
  
copy c:\autoexec.bat d:\autoexec.bat
  
 6.	Insert Setup Disk 1 in drive A or B, and type the following at the command prompt:
  
a:setup
  
	or
  
b:setup
  
 7.	When Setup displays the "Your CONFIG.SYS file contains commands that are not valid 
	MS-DOS commands" message, choose the "Modify original files" option.
 8.	After Setup is complete, MS-DOS will display an "Unrecognized command" message on your 
	screen for each command in your AUTOEXEC.BAT and CONFIG.SYS files that is not a valid 
	MS-DOS command. Remove these commands from your CONFIG.SYS and AUTOEXEC.BAT
	 files.
 9.	Add a command that starts the Himem memory manager to your CONFIG.SYS file. For 
	example, if C:\DOS contains your MS-DOS files, add the following line to the beginning of 
	your CONFIG.SYS file:
  
device=c:\dos\himem.sys
  