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zeroing empty space on a drivespace'd drive!



 
 
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  #1  
Old November 29th 05, 12:29 AM posted to microsoft.public.win98.disks.general
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Default zeroing empty space on a drivespace'd drive!

Hello,

Can someone please help....

Slightly mad question he Is there a way of getting drive image to
*not* compress a file of a given name so that this file can be zeroed
and the deleted prior to imaging the drive?

Background:-

If I wanted to use ghost or drive image to take a backup of a 250MB
drive with 50MB free space and no drivespace installed, I would create
a 50mb file full of zeros, and delete it before creating the image in
order to help with compression and therefore reduce the size of the
final image.

Now if the 250MB drive had drivespace installed and showed 540MB total
space and 302MB free, its not absolutely obvious what to do with regard
to the free space without knowing a lot more about drivespace.

For instance writing a file with 302MB worth of zeros would not fill up
the free space as the file would be compressed to almost nothing.

Writing random data to the empty area doesnt help because as soon as I
tried to overwrite it with zeros, then the new file would be tiny and
the rest would still be random - the opposite of what I want.

This brings me to my original question: Is there a way of getting drive
image to *not* compress a file of a given name so that this file can be
zeroed and the deleted prior to imaging the drive?

Any other constructive suggestions are welcome.

Hal.
thanks in advance.

  #2  
Old November 29th 05, 12:33 AM posted to microsoft.public.win98.disks.general
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Default zeroing empty space on a drivespace'd drive!

Sorry that should have read:-

Is there a way of getting DRIVESPACE to *not* compress a file of a
given name so that this file can be zeroed and the deleted prior to
imaging the drive?

Same mistake at the end too. o)
Hal

  #3  
Old November 29th 05, 01:58 AM posted to microsoft.public.win98.disks.general
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Default zeroing empty space on a drivespace'd drive!

Uncompress the drive. See #9 on this page for instructions:

http://www.frick-cpa.com/dos/DOS_drivespace.asp#9

PattyL


wrote in message
oups.com...
Sorry that should have read:-

Is there a way of getting DRIVESPACE to *not* compress a file of a
given name so that this file can be zeroed and the deleted prior to
imaging the drive?

Same mistake at the end too. o)
Hal



  #4  
Old December 3rd 05, 06:15 AM posted to microsoft.public.win98.disks.general
external usenet poster
 
Posts: n/a
Default zeroing empty space on a drivespace'd drive!

Using Compression Agent

You can use Compression Agent to compress selected files using the settings
you specify.

With Compression Agent, you can save disk space by compressing files, or
improve performance by changing the level of compression on your files.
While files on your drive are being recompressed, Compression Agent updates
information in a table to reflect how your disk space changes as files are
moved from one compression method to another.

to open Compression Agent.

Notes
You can also open Compression Agent by clicking Start, pointing to Programs,
pointing to Accessories, pointing to System Tools, and then clicking
Compression Agent.
You can use Compression Agent to compress files only on drives compressed
using DriveSpace 3
wrote in message
oups.com...
Sorry that should have read:-

Is there a way of getting DRIVESPACE to *not* compress a file of a
given name so that this file can be zeroed and the deleted prior to
imaging the drive?

Same mistake at the end too. o)
Hal



  #5  
Old December 3rd 05, 06:26 AM posted to microsoft.public.win98.disks.general
external usenet poster
 
Posts: n/a
Default zeroing empty space on a drivespace'd drive!

On second read of your post:

Norton Utilities SpeedDisk for Win9X can defragment a drivespaced drive in
two passes: (1) the FAT (DOS File table) and (2) the MDFAT (Compressed File
Table). This will align the compressed drive's data in phase (2), and will
align the data from the beginning of the CV file. So, if your CV is 300MB
and there is actually 225MB of data for SpeedDisk to align, 225MB will be
moved, starting at the first cluster of the CV file, and the area of the CV
file between the 225MB point and 300MB will be contiguously "unused". If
you select the option in Speed Disk to clear unused file space it will then
zero out this area in your CV file between 225MB and 300MB.


"Jay" wrote in message
...
Using Compression Agent

You can use Compression Agent to compress selected files using the

settings
you specify.

With Compression Agent, you can save disk space by compressing files, or
improve performance by changing the level of compression on your files.
While files on your drive are being recompressed, Compression Agent

updates
information in a table to reflect how your disk space changes as files are
moved from one compression method to another.

to open Compression Agent.

Notes
You can also open Compression Agent by clicking Start, pointing to

Programs,
pointing to Accessories, pointing to System Tools, and then clicking
Compression Agent.
You can use Compression Agent to compress files only on drives compressed
using DriveSpace 3
wrote in message
oups.com...
Sorry that should have read:-

Is there a way of getting DRIVESPACE to *not* compress a file of a
given name so that this file can be zeroed and the deleted prior to
imaging the drive?

Same mistake at the end too. o)
Hal





 




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