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#1
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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
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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
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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
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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
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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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