What MS-DOS 5 Upgrade Setup Does (71691)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
This article was previously published under Q71691
The Microsoft MS-DOS 5 Upgrade Setup program does the following:
• Warns you that you will need one to two disks for the uninstall
disk(s) depending on the capacity of the floppy disk.
• Asks you if a network is being used. If the answer is yes, you will
be encouraged to read Chapter 3, "Updating Networks for MS-DOS
Version 5.0," in the "Microsoft MS-DOS Getting Started" version 5.0
manual for information on upgrading to MS-DOS 5.0 when connected
to a network. You will also be warned that you may need to update
your network software after upgrading to MS-DOS 5.0.
• Gives you the opportunity to back up your hard disk before
upgrading to MS-DOS 5.0. If you choose to back up your hard drive,
Setup uses HDBACKUP to accomplish this. These backups can be
restored using HDRESTORE or RESTORE.
• Asks for the directory in which the current version of MS-DOS is
installed. The MS-DOS 5.0 files will be copied to the specified
• Asks whether MS-DOS Shell should be executed automatically upon
bootup. If you answer yes, the DOSSHELL command will be added to
the end of the AUTOEXEC.BAT file.
• Asks for the video display type. This information is used in
setting up the correct display driver for Shell.
• Creates the OLD_DOS.<x> directory (where <x> is a number, 1-99).
The files from the previous version of DOS are saved to this
For more information on OLD_DOS, query on the following words:
• Creates the uninstall disk(s). Usually, one disk will be created.
Occasionally, two disks will be created. The information of the
previous version of DOS, including copies of your previous
CONFIG.SYS and AUTOEXEC.BAT files, are stored on the uninstall
The following lines are added to the CONFIG.SYS and AUTOEXEC.BAT
Updates paths to all DOS drivers installed, such as SMARTDRV.SYS,
RAMDRIVE, HIMEM.SYS, EMM386.SYS, and ANSI.SYS.
(If 286 or higher processor and no XMS driver present.)
(For 286 or higher processor.)
SET SHELL=C:\DOS\COMMAND.COM C:\DOS\ /P
(If there is no SHELL statement. The default environment size
is 256; if there is already a SHELL statement with a /E value,
the previous value is copied.)
Updates paths for all MS-DOS programs that are run from AUTOEXEC.BAT.
Adds the directory specified in step 4 to the beginning of ALL
occurrences of path statements. If there is no path statement, it
For more detailed information about Setup, please refer to the
"Microsoft MS-DOS Getting Started" version 5.0 manual.
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