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1993-06-05
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ARTICLE-ID:Q96250
TITLE :How to Remove DoubleSpace and Preserve Your Files
--------------------------------------------------------------------
The information in this article applies to:
- Microsoft MS-DOS operating system version 6.0
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Summary:
The following procedure describes how to remove DoubleSpace from your
hard disk while preserving your files. It is a lengthy procedure and
should be followed only if DoubleSpace removal is necessary. If you
need to change the size of your DoubleSpace volume, type "help
dblspace" (without the quotation marks) at the MS-DOS command prompt
and refer to the online help topic DBLSPACE /SIZE.
Note: This example assumes that you have compressed your boot drive
(C) and that your DoubleSpace host partition is H. For more
information on how DoubleSpace assigns host partitions, query on the
following words in the Microsoft Knowledge Base:
doublespace and assigns and host
If you are not removing DoubleSpace from your boot drive, skip
steps 2-7.
1. Back up all the files you want to preserve from your compressed
drive (C) by using Microsoft Backup or a third-party backup utility.
(For information on using Microsoft Backup, see Chapter 3, "Managing
Your System," in the "Microsoft MS-DOS User's Guide.")
2. When you remove DoubleSpace, what is now drive H will become drive
C, which means you will boot from drive H. To be able to boot from
drive H and restore your backup files, the DoubleSpace host partition
must contain the necessary MS-DOS system files and utilities.
Furthermore, if you stored your backup files on a network drive,
network redirectors must be available.
Determine how much free space you will need to copy the MS-DOS
files (and network redirectors) on the DoubleSpace host partition
(drive H). To do so, use the DIR command. For example, to see how
much space is needed for your MS-DOS files, type the following
command:
dir c:\dos
The output appears as follows:
...
UNFORMAT.COM
VALIDATE.COM
VSAFE.COM
XCOPY.EXE
194 file(s) 7003143 bytes
12959744 bytes free
The next-to-last line shows the number of bytes used by the files in
the DOS directory. This number is the amount of free disk space needed
to store the necessary files and utilities after DoubleSpace is
removed.
3. To free unused disk space from the DoubleSpace compressed volume,
use the /SIZE switch as follows:
dblspace /size
4. Determine how much free space there is on the DoubleSpace host
partition. To do this, change to drive H and use the DIR command. The
last line of the output from the DIR command shows the number of bytes
free on drive H. If this number is greater than the number you found
in step 2, there is enough space to copy the necessary files and
utilities, and you can proceed with step 6. If there is not enough
space on the DoubleSpace host partition, proceed to step 5.
5. Delete enough files on drive C to create the needed space you
determined during step 2. (Note: Do not delete any MS-DOS or network
files; those files must be present during this procedure.)
You can use the DELTREE command to do this. (DELTREE quickly deletes
entire directories.) For example, to remove the WORD directory and all
the files and subdirectories it contains, type the following:
deltree /y c:\word
After you delete some files, shrink the DoubleSpace volume file
again by typing the following:
dblspace /size
To find out if you've created enough free disk space, change to drive
H and use the DIR command. Again, the bytes in use and bytes free are
displayed. If the last line, "bytes free," shows enough free disk
space, continue with step 6. Otherwise, repeat step 5.
6. Copy all the MS-DOS and network files that you need (the files you
determined were necessary during step 2) to the DoubleSpace host
partition (drive H). To preserve the file and directory structure, you
can use the XCOPY command with the /S switch. For example, to copy all
the MS-DOS files into a DOS directory on H, type the following:
md h:\dos
xcopy c:\dos\*.* h:\dos /s
7. Make sure there is a copy of COMMAND.COM in the root of the
DoubleSpace host partition by typing the following:
dir h:\command.com
If COMMAND.COM is not present, copy it from the boot drive (C) with
the following command:
copy c:\command.com h:\
Repeat this step for AUTOEXEC.BAT and CONFIG.SYS files. These files
need to be in the root of the DoubleSpace host partition as well.
You now have all the files you need to boot from the uncompressed
drive and restore your backup files; you can begin removing the
DoubleSpace volume.
8. Switch to the root of the DoubleSpace host partition by typing the
following:
h:
cd\
9. Delete the DoubleSpace files by using the following command:
deltree /y dblspace.*
10. If you are removing DoubleSpace from your boot drive, open the
CONFIG.SYS file from the DoubleSpace host partition (H) in a text
editor, such as MS-DOS Editor. If you are not removing DoubleSpace
from your boot drive, open the CONFIG.SYS file from drive C. Remove
any reference to DBLSPACE.SYS. For example, change your DBLSPACE.SYS
DEVICE command to appear as follows:
rem device=c:\dos\dblspace.sys
11. Restart your computer by pressing CTRL+ALT+DEL.
12. Restore your backup files.
DoubleSpace has now been removed from your system.
Additional reference words: 6.00 howto