Microsoft KB Archive/96849

= Microsoft Knowledge Base =

FastTips: MS-DOS 6.0 DoubleSpace Questions and Answers
Last reviewed: May 1, 1997

Article ID: Q96849

6.00 MS-DOS kbtool kbfile kbappnote

The information in this article applies to:


 * Microsoft MS-DOS operating system version 6.0

This article contains the complete text of the &quot;DoubleSpace Questions & Answers&quot; Application Note (PD0745) for MS-DOS 6.0.

You can obtain this Application Note from the following sources:

You can obtain this Application Note from the following sources:


 * Microsoft's World Wide Web Site on the Internet
 * The Internet (Microsoft anonymous ftp server)
 * Microsoft Download Service (MSDL)
 * Microsoft FastTips Technical Library
 * Microsoft Product Support Services

For complete information, see the &quot;To Obtain This Application Note&quot; section at the end of this article.

THE TEXT OF PD0745
Microsoft(R) Product Support Services Application Note (Text File) PD0745: DOUBLESPACE QUESTIONS AND ANSWERS Revision Date: 4/94 No Disk Included The following information applies to Microsoft MS-DOS(R), version 6.0 Upgrade.

| INFORMATION PROVIDED IN THIS DOCUMENT AND ANY SOFTWARE THAT MAY    | Q. Why does DoubleSpace create a drive identified by the letter H
 * ACCOMPANY THIS DOCUMENT (collectively referred to as an Application |
 * Note) IS PROVIDED &quot;AS IS&quot; WITHOUT WARRANTY OF ANY KIND, EITHER     |
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 * Application Note must be distributed together; and  4) This        |
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 * Copyright (C) 1993-1994 Microsoft Corporation. All Rights Reserved. |
 * Microsoft and MS-DOS are registered trademarks and Windows is a    |
 * trademark of Microsoft Corporation.                                |
 * NetWare and Novell are registered trademarks of Novell, Inc.       |
 * NetWare and Novell are registered trademarks of Novell, Inc.       |

when I have drives A, B, and C only? A. To avoid conflicts with existing drives, DoubleSpace examines the existing drive assignments during installation to find the highest drive letter currently in use. It then skips the next four letters and assigns the fifth letter to the new DoubleSpace drive. For example, if your computer has two floppy disk drives (A and      B) and a hard disk drive (C), DoubleSpace locates the highest letter (C); skips drive letters D, E, F, and G; and then assigns drive letter H for its own use. For more information, refer to the &quot;Freeing Disk Space&quot; chapter in the &quot;Microsoft MS-DOS 6 User's Guide.&quot; Q. I am currently using a third-party disk-compression software

package and now want to convert to DoubleSpace. How can I do      this? A. If you are using a third-party disk-compression software package, you need to back up your program and data files, install MS-DOS 6.0, remove your third-party disk-compression software, compress your drives with DoubleSpace, and then restore your program and data files. For more detailed information, order FastTips Technical Library item Q103949, titled &quot;Converting to DoubleSpace from Third- Party Disk Compression.&quot; Q. I installed DoubleSpace and now each time I enter Microsoft

Windows(TM) I receive the error &quot;Corrupt Swapfile Warning.&quot; I have set up my permanent swap file many times, but I continue to receive this error. How can I correct this problem? A. In this case, the error &quot;Corrupt Swapfile Warning&quot; probably means your permanent swap file is being created on a      DoubleSpace-compressed volume. Windows cannot create a      permanent swap file on a compressed volume. To correct this problem, set the permanent swap file to a noncompressed drive. Windows cannot detect DoubleSpace-compressed drives because Windows' release predates the release of DoubleSpace. For more information, refer to the &quot;Freeing Disk Space&quot; chapter in the&quot; Microsoft MS-DOS 6 User's Guide,&quot; or type &quot;HELP DBLSPACE&quot; (without the quotation marks) at the MS-DOS command prompt and press ENTER. Q. I am running the Defragmenter (DEFRAG) to reorganize the

files on my disk drive, but it appears that the program has stopped. How should I proceed? A. If you are running the Defragmenter on a DoubleSpace-compressed drive, the system may appear to stop when the Defragmenter calls DoubleSpace to defragment the compressed volume file (CVF). If this occurs, do not turn off your computer or press the reset button. If you want to quit DEFRAG or DBLSPACE /DEFRAG, press the ESC key to interrupt the program. If you think DEFRAG or DBLSPACE /DEFRAG has stopped responding, press the ESC key. If this does not work, you must restart your computer. To do so, it is preferable to press the CTRL+ALT+DEL key combination; however, if that does not work, press the reset button or turn off your computer. Q. Because DoubleSpace has assigned drive F for its own use,

my Novell(R) NetWare(R) logon scripts no longer work. How can I      correct this problem? A. The drive letter F (normally used by Novell NetWare) may be      used by DoubleSpace. To work around this situation, you can either use a different drive letter for your login drive, or      you can adjust DoubleSpace so that it uses a different drive letter for its host drive. If your usual NetWare drive letter is unavailable, use one of      the following methods to change the DoubleSpace host drive letter: - Ensure any C:\DOS\DBLSPACE.SYS commands are placed before any RAMDRIVE.SYS statements in your CONFIG.SYS file.

-or-

- Edit the DBLSPACE.INI file and change the host drive letter. For specific instructions, order FastTips Technical Library item Q97565, titled &quot;Novell Login Drive Not Available After Installing DoubleSpace.&quot;

NOTE: You can usually avoid this problem by making sure your NetWare software is loaded before you run DoubleSpace to      compress your drives.

TO OBTAIN THIS APPLICATION NOTE

 * Application Notes are available by modem from the Microsoft Download Service (MSDL), which you can reach by calling (425) 936-6735. This service is available 24 hours a day, 7 days a week. The highest download speed available is 14,400 bits per second (bps). For more information about using the MSDL, call (800) 936-4200 and follow the prompts. To obtain PD0745, download PD0745.TXT.
 * On the Internet, Application Notes are located on the Microsoft anonymous ftp server, which you can reach by typing &quot;ftp ftp.microsoft.com&quot; (without the quotation marks) at the &quot;>&quot; command prompt.
 * You can have this Application Note mailed or faxed to you from the automated Microsoft FastTips Technical Library, which you can call 24 hours a day, 7 days a week at (800) 936-4200. NOTE: The FastTips Technical Library is available only to customers within the U.S. and Canada.
 * If you are unable to access the source(s) listed above, you can have this Application Note mailed or faxed to you by calling Microsoft Product Support Services Monday through Friday, 6:00 A.M. to 6:00 P.M. Pacific time at (425) 646-5104. If you are outside the United States, contact the Microsoft subsidiary for your area.