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Microsoft KB Archive/103562

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Knowledge Base

Using CTRL+F8 to Process Configuration Files on Host Drive

Article ID: 103562

Article Last Modified on 11/22/1999


  • Microsoft MS-DOS 6.2 Standard Edition
  • Microsoft MS-DOS 6.22 Standard Edition

This article was previously published under Q103562

This information applies to both Microsoft DoubleSpace and Microsoft DriveSpace. For MS-DOS 6.22, use DRVSPACE in place of DBLSPACE for commands and filenames.


After you press CTRL+F8 to start your system without loading the DoubleSpace component (DBLSPACE.BIN), you are given the option to process the configuration files (CONFIG.SYS and AUTOEXEC.BAT) on the host drive (if there are any).

For example, you can have configuration files on the DoubleSpace- compressed drive C and configuration files for a different configuration (such as playing games) on the host drive (such as H).


When you interactively boot your computer without DoubleSpace (CTRL+F8), MS- DOS interactively processes the configuration files on drive C, which are normally seen on the host drive H. If you are using CTRL+F8 to simply get the configuration files processed but you don't want to step through them, press ESC. (This basically answers yes to all additional yes/no prompts).

NOTE: Any device drivers or terminate-and-stay-resident (TSR) programs referenced in the configuration files on the host drive must also be located on the host drive (or an uncompressed drive). For example, if you have a CONFIG.SYS file on H referencing C:\DOS\HIMEM.SYS, you need to create a DOS directory on the host drive and copy HIMEM.SYS from C to H.

Additional query words: 6.20

Keywords: KB103562