Here are the steps I took to shrink it back down: The process will run for several minutes. Each one must be weighed against post-deployment image use. An alternative to using the GUI, is the diskpart. Microsoft never recommended dynamic disks in a production environment, so you are already working outside the bounds of what they call best practices. September 29, at 1:

microsoft precompactor

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In the above example, once I packed the image from the MED-V management console the total size was reduced to 1. If prfcompactor know the maximum size you want the disks to become, convert the disk to a fixed disk.

The pre-compaction process basically consists of the following actions:. Start the virtual machine.

The files to remove are: Run the Precompaction Tool Mixrosoft all unnecessary removable files have been deleted and the drive has been defragmented, you can now, while remaining in the virtual machine, run the Virtual Disk Precompactor tool to prepare the virtual hard disk for compacting. This site uses cookies. Monday, October 1, 9: If it seems to be working for your environment, microsot. SP1 includes Virtual Disk Precompactor, a utility that is designed to “zero out”—that is, overwrite with zeros—any available blank space on a virtual hard disk.

Sign in to vote. As you can see below with our example, the precomppactor VHD file of 6. It almost goes without saying that this is also using dynamically expanding virtual hard disks.

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You do already have a backup but you don’t want to have to go through the cleanup process again. The Service Pack Clean up tool can also be run offline while creating slipstream prexompactor to reduce the size of the image. Marked as answer by Lawrence, Moderator Friday, October 12, 9: Not an IT pro?

These are only suggestions. Once all unnecessary removable files have been deleted and the drive has been defragmented, you can now, while remaining in the virtual machine, run the Virtual Disk Precompactor tool to prepare the virtual hard disk for compacting.

How to compact a Virtual PC image – Shared Points for SharePoint

MED-V leverages virtual machines and guest operating systems to provide seamless integration for legacy applications, and the seamless integration of these applications into the host desktop is proving to be an excellent way of resolving application compatibility concerns for Windows Vista and Windows 7 with MED-V 1.

While in the case where a GB VHD prrcompactor get compressed in half to 4 GB by simply packing the image, the image size can be further reduced by implementing pre-packing and pre-compaction procedures. Initially, this does not seem like the best improvement, but an optimized VHD will compress better once the MED-V compression is applied further compressing the file size down further into a.

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This can take anywhere from 5 mins upwards to complete.

One more Virtual PC performance tip

If you click Yes when you are prompted, Virtual Disk Precompactor pre-compacts all the virtual hard disks for this virtual machine.

Maybe it will provide some insights for you.

microsoft precompactor

I precompacfor made the mistake on a Virtual PC of extracting a very large compressed file on the local hard drive of the Virtual Machine. Using Virtual Disk Precompactor should result in a smaller compacted virtual hard disk. You are commenting using your WordPress.

microsoft precompactor

I say “only” but it was fine a few years ago before the use of virtual machines really kicked off. Disable the pagefile Open System in Control Panel, select the Advanced tab, click the Settings button for Performance, select the Advanced tab, click the Change button and choose “No paging file”.

Step 1 – Clean up disk space within the virtual machine. At an elevated command prompt, type:. Shut down the Virtual PC. Virtualization software Microsoft server technology.

microsoft precompactor

But I don’t defrag any more.