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PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Source: microsoft.public.mac.virtualpc
Sent: 01/26/2006
From: "Thomas" <(email address - cut out)>
Message:

Documented steps required to successfully reclaim zeroed drive space on a
bloated Virtual PC 6 hard drive document (in this example, a Virtual PC hard
drive running Windows XP Pro):

1) backup crucial data on Virtual PC hard drive (i.o.w. backup crucial data
from Windows XP Pro), or simply make a copy of the Virtual PC hard drive
document titled "Windows XP Pro" and corresponding Virtual PC document
titled "Windows XP Pro" contained in the MAC user's Documents/Virtual PC
List folder

2) download Precompactor.zip from Steve Jain's website @
http://vpc.essjae.com (direct link to this file
http://vpc.essjae.com/precompact.zip ); if file doesn't self-extract, then
unzip to expose the core precompact.exe file

3) launch Virtual PC application; startup Virtual PC hard drive to compact
(i.e. Windows XP Pro); drag precompact.exe file from MAC desktop onto
corresponding Virtual PC's desktop window (i.e. Windows XP Pro desktop)

4) from Virtual PC's desktop window, double-click precompact.exe to run
PreCompactor program; program prepares Disk C for compacting

5) upon completion, close all windows and shutdown Virtual PC hard drive
(i.e. Start/TurnoffComputer/Shutdown from Windows XP Pro) -this closes the
Virtual PC hard drive; verify hard drive is now listed as "not running" in
Virtual PC listing; keep Virtual PC application running

6) pull down Window menu and select Virtual Disk Assistant

7) "Select Operation" window - verify that "Examine or Modify Existing Disk
Image" is selected; click right arrow to continue

8) "Select Options" window - verify that "Select a Hard Drive Image Attached
to a PC" is selected; click right arrow to continue

9) "Select a PC" window - select the PC you are attempting to compact from
PC pulldown menu; corresponding drive will self-select; click right arrow to
continue

10) "Disk Image Information" window - select "Reclaim Zeroed Drive Space";
click right arrow to continue

11) "Reclaim Zeroed Drive Space" window - click "Reclaim Space" button to
start

12) "Reclaiming Zeroed Space" window - Virtual Disk Assistant reclaims
space; wait while zeroed space is reclaimed

note: there is a possibility that the procedure will not complete if there
is insufficient free space on the MAC (our process required just as much
free hard drive space as the size of the bloated Virtual PC hard drive
document)

13) "Reclaim Zeroed Space Complete" window - procedure completes; click Done
button to quit

14) the result of this procedure may not reflect actual file size reduction
until after a MAC system restart

A special thank you to Steve Jain, Paul Power, and all the end users who
shared their results and feedback after running previously documented
PreCompactor procedures.

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Related Messages

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 01/26/2006
From: "Paul Power" <(email address - cut out)>
Message:

I do NOT recommend creating a second virtual drive to store the data.

Instead, create a Shared folder within Virtual PC and save the data to
there. In this way, you can manage one virtual machine with the OS and
programs and the data will be stored in a shared folder residing on the
Mac hard drive. If Windows crashes, the data is completely isolated.

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 01/26/2006
From: "Paul Power" <(email address - cut out)>
Message:

Where you getting this info, Michael?

Every Windows app can access network drives....it's just a matter of
knowing HOW.

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 01/27/2006
From: Michael Paine <(email address - cut out)>
Message:

Step (tip) 15...when you have trimmed down the size of the virtual "c"
drive, create a second virtual drive to store most of your data and keep
the "c" drive to a manageable size:
http://www4.tpgi.com.au/users/aoaug/mac_osx.html#d-drive
Michael Paine

Thomas wrote:

Show quoted text

> Documented steps required to successfully reclaim zeroed drive space on a
> bloated Virtual PC 6 hard drive document (in this example, a Virtual PC hard
> drive running Windows XP Pro):
>
> 1) backup crucial data on Virtual PC hard drive (i.o.w. backup crucial data
> from Windows XP Pro), or simply make a copy of the Virtual PC hard drive
> document titled "Windows XP Pro" and corresponding Virtual PC document
> titled "Windows XP Pro" contained in the MAC user's Documents/Virtual PC
> List folder
>
> 2) download Precompactor.zip from Steve Jain's website @
> http://vpc.essjae.com (direct link to this file
> http://vpc.essjae.com/precompact.zip ); if file doesn't self-extract, then
> unzip to expose the core precompact.exe file
>
> 3) launch Virtual PC application; startup Virtual PC hard drive to compact
> (i.e. Windows XP Pro); drag precompact.exe file from MAC desktop onto
> corresponding Virtual PC's desktop window (i.e. Windows XP Pro desktop)
>
> 4) from Virtual PC's desktop window, double-click precompact.exe to run
> PreCompactor program; program prepares Disk C for compacting
>
> 5) upon completion, close all windows and shutdown Virtual PC hard drive
> (i.e. Start/TurnoffComputer/Shutdown from Windows XP Pro) -this closes the
> Virtual PC hard drive; verify hard drive is now listed as "not running" in
> Virtual PC listing; keep Virtual PC application running
>
> 6) pull down Window menu and select Virtual Disk Assistant
>
> 7) "Select Operation" window - verify that "Examine or Modify Existing Disk
> Image" is selected; click right arrow to continue
>
> 8) "Select Options" window - verify that "Select a Hard Drive Image Attached
> to a PC" is selected; click right arrow to continue
>
> 9) "Select a PC" window - select the PC you are attempting to compact from
> PC pulldown menu; corresponding drive will self-select; click right arrow to
> continue
>
> 10) "Disk Image Information" window - select "Reclaim Zeroed Drive Space";
> click right arrow to continue
>
> 11) "Reclaim Zeroed Drive Space" window - click "Reclaim Space" button to
> start
>
> 12) "Reclaiming Zeroed Space" window - Virtual Disk Assistant reclaims
> space; wait while zeroed space is reclaimed
>
> note: there is a possibility that the procedure will not complete if there
> is insufficient free space on the MAC (our process required just as much
> free hard drive space as the size of the bloated Virtual PC hard drive
> document)
>
> 13) "Reclaim Zeroed Space Complete" window - procedure completes; click Done
> button to quit
>
> 14) the result of this procedure may not reflect actual file size reduction
> until after a MAC system restart
>
> A special thank you to Steve Jain, Paul Power, and all the end users who
> shared their results and feedback after running previously documented
> PreCompactor procedures.
>
>

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 01/27/2006
From: Michael Paine <(email address - cut out)>
Message:

Ah - but quite a few "legacy" Windows programs (eg older versions of
Word) are unable to access the shared (Z) drive. A second virtual drive
is simple to set up and can be browsed and managed using Finder.
I have been using a second virtual drive in VPC 6/7 without problems for
2 years.
Michael Paine

Paul Power wrote:

Show quoted text

> I do NOT recommend creating a second virtual drive to store the data.
>
> Instead, create a Shared folder within Virtual PC and save the data to
> there. In this way, you can manage one virtual machine with the OS and
> programs and the data will be stored in a shared folder residing on the
> Mac hard drive. If Windows crashes, the data is completely isolated.
>

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 01/27/2006
From: Michael Paine <(email address - cut out)>
Message:

I know from bitter experince that Word 97 will crash the system if you
try and open a document that is on the z drive. I have other ancient
Windows apps (and DOS apps running in Win98 under VPC) that are unable
to open z: drive files (some software has a 2Gb drive size limit). They
all work fine (and fast) with my second virtual drive.
Michael Paine

\Paul Power wrote:

Show quoted text

> Where you getting this info, Michael?
>
> Every Windows app can access network drives....it's just a matter of
> knowing HOW.
>

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 02/11/2006
From: Tony Kavadias <(email address - cut out)>
Message:

On 2006-01-27 02:38:10 +1100, "Thomas"
<(email address - cut out)> said:

And... where's my thank you?!

Without my dedication, time and effort in extracting the
Microsoft Precompactor from Virutal PC 2004 on my Mac, you
would still be fumbling with Eraser, and I'd probably still
be writing and perfecting an efficient free-space-erasing tool.

<grin!>

--
-- tonza

Show quoted text

> A special thank you to Steve Jain, Paul Power, and all the end users
> who shared their results and feedback after running previously
> documented PreCompactor procedures.

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 02/15/2006
From: "Thomas" <(email address - cut out)>
Message:

Mr. Kavadias,

Not privey to all the players in the VirtualPC arena, we do not know who you
are; however if you are who you are, and the task you performed is as
crucial as you indicate, then by all means THANK YOU, THANK YOU, THANK
YOU!!!

All we attempted to do here is document our direct experience and the steps
we took to accomplish this proceedure. We have no experience with the
Eraser program you refer to. We're sure there are many more people we are
inadvertently excluding, including the programmers at Microsoft who maintain
and exhance this fine program called VirtualPC.

Again, thank you for your time, and all the best to you!

Thomas

"Tony Kavadias" <(email address - cut out)> wrote in message
news:43ed9f8c$0$6000$(email address - cut out)...

Show quoted text

> On 2006-01-27 02:38:10 +1100, "Thomas"
> <(email address - cut out)> said:
>
>> A special thank you to Steve Jain, Paul Power, and all the end users who
>> shared their results and feedback after running previously documented
>> PreCompactor procedures.
>
> And... where's my thank you?!
>
> Without my dedication, time and effort in extracting the
> Microsoft Precompactor from Virutal PC 2004 on my Mac, you
> would still be fumbling with Eraser, and I'd probably still
> be writing and perfecting an efficient free-space-erasing tool.
>
> <grin!>
>
>
> --
> -- tonza
>

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 02/15/2006
From: "Paul Power" <(email address - cut out)>
Message:

Don't worry about it Thomas.

He's a NOBODY!! The fact that he did a "little" bit of work to get this
working is inconsequential. You included Steve and I and that's enough.
Besides, he got his reward. We all bought him a virtual beer. :-)

Sorry, tonza..................that was too good to pass up. :-)

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 02/16/2006
From: Tony Kavadias <(email address - cut out)>
Message:

On 2006-02-16 07:22:58 +1100, "Paul Power" <(email address - cut out)> said:

Hee hee! ;-)

--
-- tonza

Show quoted text

> Don't worry about it Thomas.
>
>
> He's a NOBODY!! The fact that he did a "little" bit of work to get this
> working is inconsequential. You included Steve and I and that's enough.
> Besides, he got his reward. We all bought him a virtual beer. :-)
>
> Sorry, tonza..................that was too good to pass up. :-)

Re: PreCompactor (PreCompact) / Virtual PC Hard Drive Document Compression

Sent: 02/19/2006
From: "Jim" <(email address - cut out)>
Message:

Thanks to ALL who may have had something to do with making the
PreCompactor routine available for compressing the VPC drive. I found
it easier to use than the Eraser approach. It works!

I hope you guys are all kidding about who should get the most credit...

but speaking as only a semi-techie that understands only half of the
finer points you are discussing... I like the PreCompactor routine and
am grateful to all who may have made it possible.

Cheers for the TEAM!

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