Microsoft KB Archive/64977

= Using MS-DOS 5.0 Setup Rather Than MS-DOS 5 Upgrade Setup =

Article ID: 64977

Article Last Modified on 11/16/2006

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APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition

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This article was previously published under Q64977



SUMMARY
When the Microsoft MS-DOS version 5.0 installation program is run on a machine that had a previous system present, the program copies the CONFIG.SYS and AUTOEXEC.BAT files to CONFIG.OLD and AUTOEXEC.OLD, replacing them with new ones of its own. The Microsoft MS-DOS 5 Upgrade's Setup, however, simply modifies the current files. This can cause problems because the MS-DOS installation program changes system settings such as the &quot;files=&quot; and &quot;buffers=&quot; settings to values that may cause programs already installed on the machine to fail.

One situation in which this is a problem is if Windows is present on the system. The installation program sets &quot;files=&quot; to 10, a value that is too low for Windows to run.

Additional query words: 5.00

Keywords: KB64977

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