MS-DOS Does Not Upgrade from Compaq DOS 2.11 (74422)


The information in this article applies to:
    • Microsoft MS-DOS operating system 5.0
    • Microsoft MS-DOS operating system 5.0a
    • Microsoft MS-DOS operating system 6.0
    • Microsoft MS-DOS operating system 6.2
    • Microsoft MS-DOS operating system 6.21
    • Microsoft MS-DOS operating system 6.22
This article was previously published under Q74422

SUMMARY

Compaq DOS version 2.11 is equivalent to MS-DOS version 2.1. Microsoft MS-DOS 5 or later Upgrade requires MS-DOS 2.11 or later to upgrade DOS to version 5.0 or later. The following error message is likely to occur when upgrading from Compaq DOS 2.11:

YOUR VERSION OF DOS CANNOT BE UPGRADED BY SETUP

MORE INFORMATION

You may receive this message when installing to the hard disk or to the floppy drive. To upgrade to MS-DOS 5.0 or later, use the following steps:

    • Install MS-DOS 5.0 or later on another computer by typing setup/f.
    • Boot the original computer using the startup disk.
    • Verify that the hard disk is functional under MS-DOS 5.0 or later (the CHKDSK [no /f] command will verify proper disk access by the current DOS version).
    • Use the SYS command to copy the system files onto the hard drive.
    • Copy the MS-DOS 5.0 files or later from the working disks to the DOS directory on the hard drive.
    • Restart the computer from the hard disk.
Modification Type: Major Last Reviewed: 5/12/2003
Keywords: KB74422
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