Downloading an image from a WDS server can be time consuming. You can speed this up by increasing the block size, but please proceed with caution and test first. The command-line utility we're going to use is bcdedit. Vista and WinPE have bcdedit natively, so running this command from Vista or WinPE is the simplest method. We'll run the bcdedit command from a machine named Vista1:

1. On a WDS server (ours is named WDSServer) share the \REMOTEINSTALL\Boot\x86 folder (this is the default folder for storing your images). For this example, we'll use x86 as the shared folder name.
2. From Vista1, map a drive to the x86 shared folder (net use W: \\WDSServer\x86). If prompted for credentials, enter administrative credentials.
3. Copy the default.bcd found in the x86 folder to Vista1's local C:\ drive.
4. The command to change the TFTP block size to 8192KB is typed on the Vista1 machine as one long command from the C: drive:
   
   Bcdedit -store default.bcd -set {68d9e51c-a129-4ee1-9725-2ab00a957daf} ramdisktftpblocksize 8192
   
   (You could use different block sizes such as 4096 or 16384, but the 8192 seems to work well.)
5. Copy the default.bcd from the Vista1 machine to its original location on the WDS server.
6. On the WDSServer, go to a command prompt and type: Sc control wdsserver 129 (this will reset the TFTP block size for the WDSServer).

All this should help you install, configure and enhance your Windows Deployment Service server. Whether you're deploying on a single machine or across a network, Vista can be a monster to deploy. These tools and techniques should help

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