Zero-izing windows drive - Udpcast

29 Jul 2004

Please send the folowup question to the group as well. I don't know how to
do it in Windows.
Glad to help,

Lee

-----Original Message-----
From: cmonster(a)icehouse.net [mailto:cmonster@icehouse.net]
Sent: Wednesday, July 28, 2004 10:47 PM
To: Lee Kransen
Subject: RE: [Udpcast] Image size bigger that actual space used

Thanks for the reply. I kind of thought it might something like that. These
are
widows systems I am imaging. How would I zero-ize the drive it windows?

Quoting Lee Kransen &lt;lee(a)servision.net&gt;et>:

...
  1. Although 2.5/20 is currently in use it could be
that much of the rest of
...
  the 20GB was once written to and now does not contain
strictly 0000000's. In
...
  this case the compression will not be as great as it
could be. You may want
...
  to use the suggested procedure for Zero-izing your
disk before turning it
 into a compressed image. This will have to be done for each partition on the
...
  disk.

 -----------------------------------------------
 On the live system, just create a huge file:

 dd if=/dev/zero of=filler-file

 After a while, the dd will error out with a "disk full" error.

 Then, do a couple of syncs, and remove the file.

 sync
 sync
 rm filler-file
 -----------------------------------------------

 2. lzop is designed for speed and not compression. Try setting the
 compression level to -7, -8, or -9 for better compression.

 Lee

 -----Original Message-----
 From: udpcast-bounces(a)udpcast.linux.lu
 [mailto:udpcast-bounces@udpcast.linux.lu] On Behalf Of cmonster(a)icehouse.net
...
  Sent: Tuesday, July 27, 2004 4:36 PM I am having
a problem with the compressed size of the drive being far larger
than the size that is really used (I.E. 2.5 gigs used but image size of 9 gigs).
I found a program called sdelete and tried using it to cleanise the unused
space. But every time I run the udpcast to remake the image after using sdelete
it is even bigger than before! Any one have any ideas?

...
  To: udpcast(a)udpcast.linux.lu
 Subject: [Udpcast] Image size bigger that actual space used

 I have been trying to send an image to my server. The hard drive on the
 computer
 that I am sending from is 20 gig with 2.5 used. I turn on lzop compession
 and
 send the image to the server. But the image file endes up being 8.2 gigs.
 Any
 idea why it would be that big?

 Thanks again for your help
 Kevin
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