McFishcake

I have made some progress. After enabling the RPCSS DCOMLaunch plugin and altering the DCOMLaunch.INF I have a 2003SP1 BartPE that now allows me to start DISKPART, list disk information, clean disks, create an extended partition etc. but when I attempt to create a primary partition I get the "disk management serice cannot complete..." error again. Currently I am only working on a VMWare 5 machine so may try some physical hardware and also a vanilla WinPE 1.6 image instead of BartPE. Still it is strange that the older BartPE built from Win2003 (no SP) is still working fine.

I have the same problem. The boot source does not appear to be relevant as with PXE or CD DISKPART fails with PE built from 2003SP1 but works fine if I go back to an older PE built with 2003 release files. Currently I am working around it - using the WinPE 1.6 files to do the PXE bit with ramdisk and then having the full PE .iso as the old one so I get the PXE booting and can still use DISKPART. However it would be nice to know a fix if anyone can work out what's changed. I tried runnning the older DISKPART.EXE on the newer PE but the problem remains.